81026410374 has 96 divisors (see below), whose sum is σ = 224073158400. Its totient is φ = 21369591072.

The previous prime is 81026410307. The next prime is 81026410393. The reversal of 81026410374 is 47301462018.

81026410374 is a `hidden beast` number, since 8 + 1 + 0 + 2 + 641 + 0 + 3 + 7 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 871824 + ... + 960275.

It is an arithmetic number, because the mean of its divisors is an integer number (2334095400).

Almost surely, 2^81026410374 is an apocalyptic number.

81026410374 is an abundant number, since it is smaller than the sum of its proper divisors (143046748026).

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

81026410374 is a wasteful number, since it uses less digits than its factorization.

81026410374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832136 (or 1832124 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 81026410374 in words is "eighty-one billion, twenty-six million, four hundred ten thousand, three hundred seventy-four".