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20315066640153 = 31714891553172259
BaseRepresentation
bin1001001111001111110000…
…10101001010011100011001
32122221002201220221011012020
410213213320111022130121
510130320224024441103
6111112340205405053
74164500201204655
oct447477025123431
978832656834166
1020315066640153
11652263156205a
122341242869789
13b449196c1b1c
1450337c3ada65
1525369511e753
hex1279f854a719

20315066640153 has 32 divisors (see below), whose sum is σ = 28718002051200. Its totient is φ = 12729871712256.

The previous prime is 20315066640097. The next prime is 20315066640157. The reversal of 20315066640153 is 35104666051302.

It is not a de Polignac number, because 20315066640153 - 228 = 20314798204697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20315066640157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117847138 + ... + 118019396.

It is an arithmetic number, because the mean of its divisors is an integer number (897437564100).

Almost surely, 220315066640153 is an apocalyptic number.

It is an amenable number.

20315066640153 is a deficient number, since it is larger than the sum of its proper divisors (8402935411047).

20315066640153 is a wasteful number, since it uses less digits than its factorization.

20315066640153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175321.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 20315066640153 in words is "twenty trillion, three hundred fifteen billion, sixty-six million, six hundred forty thousand, one hundred fifty-three".

Divisors: 1 3 17 51 1489 1553 4467 4659 25313 26401 75939 79203 172259 516777 2312417 2928403 6937251 8785209 39311089 117933267 256493651 267518227 769480953 802554681 4360392067 4547809859 13081176201 13643429577 398334640003 1195003920009 6771688880051 20315066640153