18077972694 has 16 divisors (see below), whose sum is σ = 36506975232. Its totient is φ = 5967485928.

The previous prime is 18077972687. The next prime is 18077972713. The reversal of 18077972694 is 49627977081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14625574 + ... + 14626809.

It is an arithmetic number, because the mean of its divisors is an integer number (2281685952).

Almost surely, 2^18077972694 is an apocalyptic number.

18077972694 is an abundant number, since it is smaller than the sum of its proper divisors (18429002538).

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

18077972694 is a wasteful number, since it uses less digits than its factorization.

18077972694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29252491.

The product of its (nonzero) digits is 10668672, while the sum is 60.

The spelling of 18077972694 in words is "eighteen billion, seventy-seven million, nine hundred seventy-two thousand, six hundred ninety-four".