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20010153405 = 3511439727581
BaseRepresentation
bin10010101000101100…
…101011010110111101
31220122112122010002210
4102220230223112331
5311440044402110
613105331011033
71305604332444
oct225054532675
956575563083
1020010153405
118539234470
123a65439a79
131b6b821278
14d7b7a9d5b
157c1ac4520
hex4a8b2b5bd

20010153405 has 32 divisors (see below), whose sum is σ = 34936023168. Its totient is φ = 9699334400.

The previous prime is 20010153403. The next prime is 20010153407. The reversal of 20010153405 is 50435101002.

It is an interprime number because it is at equal distance from previous prime (20010153403) and next prime (20010153407).

It is not a de Polignac number, because 20010153405 - 21 = 20010153403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010153403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 711715 + ... + 739295.

It is an arithmetic number, because the mean of its divisors is an integer number (1091750724).

Almost surely, 220010153405 is an apocalyptic number.

It is an amenable number.

20010153405 is a deficient number, since it is larger than the sum of its proper divisors (14925869763).

20010153405 is a wasteful number, since it uses less digits than its factorization.

20010153405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31997.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 20010153405 its reverse (50435101002), we get a palindrome (70445254407).

The spelling of 20010153405 in words is "twenty billion, ten million, one hundred fifty-three thousand, four hundred five".

Divisors: 1 3 5 11 15 33 55 165 4397 13191 21985 27581 48367 65955 82743 137905 145101 241835 303391 413715 725505 910173 1516955 4550865 121273657 363820971 606368285 1334010227 1819104855 4002030681 6670051135 20010153405