78879704272 has 10 divisors (see below), whose sum is σ = 152829427058. Its totient is φ = 39439852128.

The previous prime is 78879704269. The next prime is 78879704279. The reversal of 78879704272 is 27240797887.

It can be written as a sum of positive squares in only one way, i.e., 78565847616 + 313856656 = 280296^2 + 17716^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78879704272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78879704279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2464990743 + ... + 2464990774.

Almost surely, 2^78879704272 is an apocalyptic number.

It is an amenable number.

78879704272 is a deficient number, since it is larger than the sum of its proper divisors (73949722786).

78879704272 is a wasteful number, since it uses less digits than its factorization.

78879704272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4929981525 (or 4929981519 counting only the distinct ones).

The product of its (nonzero) digits is 22127616, while the sum is 61.

The spelling of 78879704272 in words is "seventy-eight billion, eight hundred seventy-nine million, seven hundred four thousand, two hundred seventy-two".