105631612492 has 48 divisors (see below), whose sum is σ = 220492726272. Its totient is φ = 43293729600.

The previous prime is 105631612483. The next prime is 105631612517. The reversal of 105631612492 is 294216136501.

It is a super-2 number, since 2×105631612492² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3942742 + ... + 3969442.

It is an arithmetic number, because the mean of its divisors is an integer number (4593598464).

Almost surely, 2^105631612492 is an apocalyptic number.

It is an amenable number.

105631612492 is an abundant number, since it is smaller than the sum of its proper divisors (114861113780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105631612492 is a wasteful number, since it uses less digits than its factorization.

105631612492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32878 (or 32876 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

Adding to 105631612492 its reverse (294216136501), we get a palindrome (399847748993).

The spelling of 105631612492 in words is "one hundred five billion, six hundred thirty-one million, six hundred twelve thousand, four hundred ninety-two".