81079384702 has 16 divisors (see below), whose sum is σ = 122003668800. Its totient is φ = 40411542528.

The previous prime is 81079384691. The next prime is 81079384717. The reversal of 81079384702 is 20748397018.

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, 5147563 + ... + 5163289.

It is an arithmetic number, because the mean of its divisors is an integer number (7625229300).

Almost surely, 2^81079384702 is an apocalyptic number.

81079384702 is a deficient number, since it is larger than the sum of its proper divisors (40924284098).

81079384702 is a wasteful number, since it uses less digits than its factorization.

81079384702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23715.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 81079384702 in words is "eighty-one billion, seventy-nine million, three hundred eighty-four thousand, seven hundred two".