81112492002 has 16 divisors (see below), whose sum is σ = 162235602432. Its totient is φ = 27035727600.

The previous prime is 81112491959. The next prime is 81112492033. The reversal of 81112492002 is 20029421118.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341353 + ... + 527964.

It is an arithmetic number, because the mean of its divisors is an integer number (10139725152).

Almost surely, 2^81112492002 is an apocalyptic number.

81112492002 is an abundant number, since it is smaller than the sum of its proper divisors (81123110430).

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

81112492002 is a wasteful number, since it uses less digits than its factorization.

81112492002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884873.

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 81112492002 in words is "eighty-one billion, one hundred twelve million, four hundred ninety-two thousand, two".