78372960772 has 6 divisors (see below), whose sum is σ = 137152681358. Its totient is φ = 39186480384.

The previous prime is 78372960769. The next prime is 78372960793. The reversal of 78372960772 is 27706927387.

It can be written as a sum of positive squares in only one way, i.e., 77900159236 + 472801536 = 279106^2 + 21744^2 .

It is a super-2 number, since 2×78372960772² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9796620093 + ... + 9796620100.

Almost surely, 2^78372960772 is an apocalyptic number.

It is an amenable number.

78372960772 is a deficient number, since it is larger than the sum of its proper divisors (58779720586).

78372960772 is a wasteful number, since it uses less digits than its factorization.

78372960772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19593240197 (or 19593240195 counting only the distinct ones).

The product of its (nonzero) digits is 12446784, while the sum is 58.

The spelling of 78372960772 in words is "seventy-eight billion, three hundred seventy-two million, nine hundred sixty thousand, seven hundred seventy-two".