78404117683672 has 64 divisors (see below), whose sum is σ = 160794211680000. Its totient is φ = 35544513191040.

The previous prime is 78404117683627. The next prime is 78404117683691. The reversal of 78404117683672 is 27638671140487.

It is a super-2 number, since 2×78404117683672² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69568453 + ... + 70686475.

It is an arithmetic number, because the mean of its divisors is an integer number (2512409557500).

Almost surely, 2^{78404117683672} is an apocalyptic number.

It is an amenable number.

78404117683672 is an abundant number, since it is smaller than the sum of its proper divisors (82390093996328).

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

78404117683672 is a wasteful number, since it uses less digits than its factorization.

78404117683672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120136 (or 1120132 counting only the distinct ones).

The product of its (nonzero) digits is 75866112, while the sum is 64.

The spelling of 78404117683672 in words is "seventy-eight trillion, four hundred four billion, one hundred seventeen million, six hundred eighty-three thousand, six hundred seventy-two".