78297607456 has 24 divisors (see below), whose sum is σ = 157733264304. Its totient is φ = 38238365760.

The previous prime is 78297607441. The next prime is 78297607459. The reversal of 78297607456 is 65470679287.

It is a happy number.

It is a super-2 number, since 2×78297607456² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78297607394 and 78297607403.

It is not an unprimeable number, because it can be changed into a prime (78297607459) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 28449790 + ... + 28452541.

It is an arithmetic number, because the mean of its divisors is an integer number (6572219346).

Almost surely, 2^78297607456 is an apocalyptic number.

It is an amenable number.

78297607456 is an abundant number, since it is smaller than the sum of its proper divisors (79435656848).

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

78297607456 is a wasteful number, since it uses less digits than its factorization.

78297607456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56902384 (or 56902376 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 61.

The spelling of 78297607456 in words is "seventy-eight billion, two hundred ninety-seven million, six hundred seven thousand, four hundred fifty-six".