78919025976 has 128 divisors (see below), whose sum is σ = 257308032000. Its totient is φ = 21938864256.

The previous prime is 78919025963. The next prime is 78919025989. The reversal of 78919025976 is 67952091987.

It is an interprime number because it is at equal distance from previous prime (78919025963) and next prime (78919025989).

It is a super-2 number, since 2×78919025976² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 31 ways as a sum of consecutive naturals, for example, 649396 + ... + 761283.

It is an arithmetic number, because the mean of its divisors is an integer number (2010219000).

Almost surely, 2^78919025976 is an apocalyptic number.

It is an amenable number.

78919025976 is an abundant number, since it is smaller than the sum of its proper divisors (178389006024).

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

78919025976 is a wasteful number, since it uses less digits than its factorization.

78919025976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410738 (or 1410728 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 63.

The spelling of 78919025976 in words is "seventy-eight billion, nine hundred nineteen million, twenty-five thousand, nine hundred seventy-six".