81790131710 has 16 divisors (see below), whose sum is σ = 168253985376. Its totient is φ = 28042330848.

The previous prime is 81790131677. The next prime is 81790131727. The reversal of 81790131710 is 1713109718.

It is a congruent 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, 584215157 + ... + 584215296.

It is an arithmetic number, because the mean of its divisors is an integer number (10515874086).

Almost surely, 2^81790131710 is an apocalyptic number.

81790131710 is an abundant number, since it is smaller than the sum of its proper divisors (86463853666).

81790131710 is a wasteful number, since it uses less digits than its factorization.

81790131710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168430467.

The product of its (nonzero) digits is 10584, while the sum is 38.

The spelling of 81790131710 in words is "eighty-one billion, seven hundred ninety million, one hundred thirty-one thousand, seven hundred ten".