13557211275531 has 128 divisors (see below), whose sum is σ = 22958633779200. Its totient is φ = 6912199388160.

The previous prime is 13557211275521. The next prime is 13557211275539.

13557211275531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13557211275531 - 2⁶ = 13557211275467 is a prime.

It is a super-2 number, since 2×13557211275531² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13557211275539) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1645887745 + ... + 1645895981.

It is an arithmetic number, because the mean of its divisors is an integer number (179364326400).

Almost surely, 2^{13557211275531} is an apocalyptic number.

13557211275531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13557211275531 is a deficient number, since it is larger than the sum of its proper divisors (9401422503669).

13557211275531 is a wasteful number, since it uses less digits than its factorization.

13557211275531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8929.

The product of its digits is 1102500, while the sum is 48.

The spelling of 13557211275531 in words is "thirteen trillion, five hundred fifty-seven billion, two hundred eleven million, two hundred seventy-five thousand, five hundred thirty-one".