78298390460 has 12 divisors (see below), whose sum is σ = 164426620008. Its totient is φ = 31319356176.

The previous prime is 78298390459. The next prime is 78298390477. The reversal of 78298390460 is 6409389287.

It is a happy number.

It is a super-2 number, since 2×78298390460² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78298390396 and 78298390405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1957459742 + ... + 1957459781.

It is an arithmetic number, because the mean of its divisors is an integer number (13702218334).

Almost surely, 2^78298390460 is an apocalyptic number.

It is an amenable number.

78298390460 is an abundant number, since it is smaller than the sum of its proper divisors (86128229548).

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

78298390460 is a wasteful number, since it uses less digits than its factorization.

78298390460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914919532 (or 3914919530 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 78298390460 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred ninety thousand, four hundred sixty".