78174887708864 has 14 divisors (see below), whose sum is σ = 155128292797404. Its totient is φ = 39087443854400.

The previous prime is 78174887708821. The next prime is 78174887708971. The reversal of 78174887708864 is 46880778847187.

It is a super-2 number, since 2×78174887708864² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610741310162 + ... + 610741310289.

Almost surely, 2^{78174887708864} is an apocalyptic number.

It is an amenable number.

78174887708864 is a deficient number, since it is larger than the sum of its proper divisors (76953405088540).

78174887708864 is a wasteful number, since it uses less digits than its factorization.

78174887708864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221482620463 (or 1221482620453 counting only the distinct ones).

The product of its (nonzero) digits is 7552892928, while the sum is 83.

The spelling of 78174887708864 in words is "seventy-eight trillion, one hundred seventy-four billion, eight hundred eighty-seven million, seven hundred eight thousand, eight hundred sixty-four".