81079384701 has 16 divisors (see below), whose sum is σ = 125574942848. Its totient is φ = 45571550400.

The previous prime is 81079384691. The next prime is 81079384717. The reversal of 81079384701 is 10748397018.

It is not a de Polignac number, because 81079384701 - 2⁵ = 81079384669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81079389701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31645630 + ... + 31648191.

It is an arithmetic number, because the mean of its divisors is an integer number (7848433928).

Almost surely, 2^81079384701 is an apocalyptic number.

It is an amenable number.

81079384701 is a deficient number, since it is larger than the sum of its proper divisors (44495558147).

81079384701 is a wasteful number, since it uses less digits than its factorization.

81079384701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63293892.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 81079384701 in words is "eighty-one billion, seventy-nine million, three hundred eighty-four thousand, seven hundred one".