65778979360 has 48 divisors (see below), whose sum is σ = 160415845632. Its totient is φ = 25462828800.

The previous prime is 65778979289. The next prime is 65778979373. The reversal of 65778979360 is 6397987756.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6625986 + ... + 6635905.

It is an arithmetic number, because the mean of its divisors is an integer number (3341996784).

Almost surely, 2^65778979360 is an apocalyptic number.

It is an amenable number.

65778979360 is an abundant number, since it is smaller than the sum of its proper divisors (94636866272).

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

65778979360 is a wasteful number, since it uses less digits than its factorization.

65778979360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13261937 (or 13261929 counting only the distinct ones).

The product of its (nonzero) digits is 120022560, while the sum is 67.

The spelling of 65778979360 in words is "sixty-five billion, seven hundred seventy-eight million, nine hundred seventy-nine thousand, three hundred sixty".