81102999932 has 12 divisors (see below), whose sum is σ = 142179691920. Its totient is φ = 40480230816.

The previous prime is 81102999931. The next prime is 81102999937. The reversal of 81102999932 is 23999920118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81102999931) 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, 17814728 + ... + 17819279.

It is an arithmetic number, because the mean of its divisors is an integer number (11848307660).

Almost surely, 2^81102999932 is an apocalyptic number.

It is an amenable number.

81102999932 is a deficient number, since it is larger than the sum of its proper divisors (61076691988).

81102999932 is a wasteful number, since it uses less digits than its factorization.

81102999932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35634580 (or 35634578 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 53.

The spelling of 81102999932 in words is "eighty-one billion, one hundred two million, nine hundred ninety-nine thousand, nine hundred thirty-two".