78001905704 has 16 divisors (see below), whose sum is σ = 146260156020. Its totient is φ = 38999197440.

The previous prime is 78001905689. The next prime is 78001905713. The reversal of 78001905704 is 40750910087.

It can be written as a sum of positive squares in 2 ways, for example, as 77969392900 + 32512804 = 279230^2 + 5702^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19907 + ... + 395474.

Almost surely, 2^78001905704 is an apocalyptic number.

It is an amenable number.

78001905704 is a deficient number, since it is larger than the sum of its proper divisors (68258250316).

78001905704 is a wasteful number, since it uses less digits than its factorization.

78001905704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438860 (or 438856 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 78001905704 in words is "seventy-eight billion, one million, nine hundred five thousand, seven hundred four".