10531111551 has 32 divisors (see below), whose sum is σ = 14861548800. Its totient is φ = 6614887680.

The previous prime is 10531111529. The next prime is 10531111559. The reversal of 10531111551 is 15511113501.

It is not a de Polignac number, because 10531111551 - 2⁵ = 10531111519 is a prime.

It is a super-2 number, since 2×10531111551² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10531111559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12984936 + ... + 12985746.

It is an arithmetic number, because the mean of its divisors is an integer number (464423400).

Almost surely, 2^10531111551 is an apocalyptic number.

10531111551 is a deficient number, since it is larger than the sum of its proper divisors (4330437249).

10531111551 is a wasteful number, since it uses less digits than its factorization.

10531111551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799.

The product of its (nonzero) digits is 375, while the sum is 24.

The spelling of 10531111551 in words is "ten billion, five hundred thirty-one million, one hundred eleven thousand, five hundred fifty-one".