78079079684 has 6 divisors (see below), whose sum is σ = 136638389454. Its totient is φ = 39039539840.

The previous prime is 78079079671. The next prime is 78079079707. The reversal of 78079079684 is 48697097087.

It can be written as a sum of positive squares in only one way, i.e., 64455054400 + 13624025284 = 253880^2 + 116722^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78079079684.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9759884957 + ... + 9759884964.

It is an arithmetic number, because the mean of its divisors is an integer number (22773064909).

Almost surely, 2^78079079684 is an apocalyptic number.

It is an amenable number.

78079079684 is a deficient number, since it is larger than the sum of its proper divisors (58559309770).

78079079684 is a wasteful number, since it uses less digits than its factorization.

78079079684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19519769925 (or 19519769923 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 65.

The spelling of 78079079684 in words is "seventy-eight billion, seventy-nine million, seventy-nine thousand, six hundred eighty-four".