78490657068 has 24 divisors (see below), whose sum is σ = 183635881968. Its totient is φ = 26093407296.

The previous prime is 78490657067. The next prime is 78490657093. The reversal of 78490657068 is 86075609487.

It is not an unprimeable number, because it can be changed into a prime (78490657067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8763471 + ... + 8772422.

It is an arithmetic number, because the mean of its divisors is an integer number (7651495082).

Almost surely, 2^78490657068 is an apocalyptic number.

It is an amenable number.

78490657068 is an abundant number, since it is smaller than the sum of its proper divisors (105145224900).

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

78490657068 is a wasteful number, since it uses less digits than its factorization.

78490657068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17536273 (or 17536271 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 78490657068 in words is "seventy-eight billion, four hundred ninety million, six hundred fifty-seven thousand, sixty-eight".