78047771044 has 12 divisors (see below), whose sum is σ = 136748760624. Its totient is φ = 38976696584.

The previous prime is 78047770991. The next prime is 78047771071. The reversal of 78047771044 is 44017774087.

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, 11793514 + ... + 11800129.

It is an arithmetic number, because the mean of its divisors is an integer number (11395730052).

Almost surely, 2^78047771044 is an apocalyptic number.

It is an amenable number.

78047771044 is a deficient number, since it is larger than the sum of its proper divisors (58700989580).

78047771044 is a wasteful number, since it uses less digits than its factorization.

78047771044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23594474 (or 23594472 counting only the distinct ones).

The product of its (nonzero) digits is 1229312, while the sum is 49.

The spelling of 78047771044 in words is "seventy-eight billion, forty-seven million, seven hundred seventy-one thousand, forty-four".