78368380833672 has 96 divisors (see below), whose sum is σ = 223053520884480. Its totient is φ = 24825684401280.

The previous prime is 78368380833571. The next prime is 78368380833737. The reversal of 78368380833672 is 27633808386387.

78368380833672 is a `hidden beast` number, since 7 + 8 + 36 + 83 + 80 + 83 + 367 + 2 = 666.

It is a super-2 number, since 2×78368380833672² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 78368380833672.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 341950104 + ... + 342179207.

It is an arithmetic number, because the mean of its divisors is an integer number (2323474175880).

Almost surely, 2^{78368380833672} is an apocalyptic number.

78368380833672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78368380833672 is an abundant number, since it is smaller than the sum of its proper divisors (144685140050808).

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

78368380833672 is a wasteful number, since it uses less digits than its factorization.

78368380833672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684129403 (or 684129396 counting only the distinct ones).

The product of its (nonzero) digits is 1170505728, while the sum is 72.

The spelling of 78368380833672 in words is "seventy-eight trillion, three hundred sixty-eight billion, three hundred eighty million, eight hundred thirty-three thousand, six hundred seventy-two".