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13053804637 = 17767870861
BaseRepresentation
bin11000010100001000…
…10100000001011101
31020200202000222112211
430022010110001131
5203213233222022
65555152200421
7641325336316
oct141204240135
936622028484
1013053804637
1155995946a5
122643839111
13130058ca73
148bb97360d
1551602de77
hex30a11405d

13053804637 has 4 divisors (see below), whose sum is σ = 13821675516. Its totient is φ = 12285933760.

The previous prime is 13053804611. The next prime is 13053804677. The reversal of 13053804637 is 73640835031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10960833636 + 2092971001 = 104694^2 + 45749^2 .

It is a cyclic number.

It is not a de Polignac number, because 13053804637 - 27 = 13053804509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13053804637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13053804677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383935414 + ... + 383935447.

It is an arithmetic number, because the mean of its divisors is an integer number (3455418879).

Almost surely, 213053804637 is an apocalyptic number.

13053804637 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13053804637 is a deficient number, since it is larger than the sum of its proper divisors (767870879).

13053804637 is an equidigital number, since it uses as much as digits as its factorization.

13053804637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767870878.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 13053804637 in words is "thirteen billion, fifty-three million, eight hundred four thousand, six hundred thirty-seven".

Divisors: 1 17 767870861 13053804637