715249902978 has 24 divisors (see below), whose sum is σ = 1668916440828. Its totient is φ = 220076893152.

The previous prime is 715249902977. The next prime is 715249902979. The reversal of 715249902978 is 879209942517.

715249902978 is a `hidden beast` number, since 7 + 1 + 52 + 499 + 0 + 2 + 97 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (715249902977) and next prime (715249902979).

It can be written as a sum of positive squares in 2 ways, for example, as 701729562249 + 13520340729 = 837693^2 + 116277^2 .

It is not an unprimeable number, because it can be changed into a prime (715249902973) 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 11 ways as a sum of consecutive naturals, for example, 1528311525 + ... + 1528311992.

Almost surely, 2^715249902978 is an apocalyptic number.

715249902978 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

715249902978 is an abundant number, since it is smaller than the sum of its proper divisors (953666537850).

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

715249902978 is a wasteful number, since it uses less digits than its factorization.

715249902978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056623538 (or 3056623535 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 63.

The spelling of 715249902978 in words is "seven hundred fifteen billion, two hundred forty-nine million, nine hundred two thousand, nine hundred seventy-eight".