78649000712 has 8 divisors (see below), whose sum is σ = 147466876350. Its totient is φ = 39324500352.

The previous prime is 78649000699. The next prime is 78649000789. The reversal of 78649000712 is 21700094687.

It can be written as a sum of positive squares in only one way, i.e., 72551577316 + 6097423396 = 269354^2 + 78086^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4915562537 + ... + 4915562552.

Almost surely, 2^78649000712 is an apocalyptic number.

It is an amenable number.

78649000712 is a deficient number, since it is larger than the sum of its proper divisors (68817875638).

78649000712 is a wasteful number, since it uses less digits than its factorization.

78649000712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9831125095 (or 9831125091 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 78649000712 in words is "seventy-eight billion, six hundred forty-nine million, seven hundred twelve", and thus it is an aban number.