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2153053015015 = 5731149111711923
BaseRepresentation
bin11111010101001011111…
…101011100101111100111
321121211101222002121002211
4133111023331130233213
5240233423032440030
64325033210144251
7311360442444520
oct37251375345747
97554358077084
102153053015015
1176011732a341
122a9339122087
1312805549a896
14762cb8c7847
153b014b2412a
hex1f54bf5cbe7

2153053015015 has 64 divisors (see below), whose sum is σ = 3071469772800. Its totient is φ = 1417775685120.

The previous prime is 2153053014979. The next prime is 2153053015033. The reversal of 2153053015015 is 5105103503512.

It is not a de Polignac number, because 2153053015015 - 211 = 2153053012967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 180573844 + ... + 180585766.

It is an arithmetic number, because the mean of its divisors is an integer number (47991715200).

Almost surely, 22153053015015 is an apocalyptic number.

2153053015015 is a deficient number, since it is larger than the sum of its proper divisors (918416757785).

2153053015015 is a wasteful number, since it uses less digits than its factorization.

2153053015015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13232.

The product of its (nonzero) digits is 11250, while the sum is 31.

Adding to 2153053015015 its reverse (5105103503512), we get a palindrome (7258156518527).

The spelling of 2153053015015 in words is "two trillion, one hundred fifty-three billion, fifty-three million, fifteen thousand, fifteen".

Divisors: 1 5 7 31 35 149 155 217 745 1043 1085 1117 4619 5215 5585 7819 11923 23095 32333 34627 39095 59615 83461 161665 166433 173135 242389 369613 417305 832165 1165031 1211945 1776527 1848065 2587291 5159423 5825155 8882635 12435689 12936455 13317991 25797115 36115961 55072337 62178445 66589955 93225937 180579805 275361685 385506359 412857721 466129685 1927531795 1984380659 2064288605 2890004047 9921903295 13890664613 14450020235 61515800429 69453323065 307579002145 430610603003 2153053015015