78181804164692 has 24 divisors (see below), whose sum is σ = 141233089804800. Its totient is φ = 37829518570080.

The previous prime is 78181804164677. The next prime is 78181804164703. The reversal of 78181804164692 is 29646140818187.

78181804164692 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×78181804164692² (a number of 29 digits) contains 22 as substring.

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, 9148934 + ... + 15494082.

It is an arithmetic number, because the mean of its divisors is an integer number (5884712075200).

Almost surely, 2^{78181804164692} is an apocalyptic number.

It is an amenable number.

78181804164692 is a deficient number, since it is larger than the sum of its proper divisors (63051285640108).

78181804164692 is a wasteful number, since it uses less digits than its factorization.

78181804164692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444551 (or 6444549 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 65.

The spelling of 78181804164692 in words is "seventy-eight trillion, one hundred eighty-one billion, eight hundred four million, one hundred sixty-four thousand, six hundred ninety-two".