78557042470 has 16 divisors (see below), whose sum is σ = 145224371088. Its totient is φ = 30573551520.

The previous prime is 78557042467. The next prime is 78557042503. The reversal of 78557042470 is 7424075587.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106157796 + ... + 106158535.

It is an arithmetic number, because the mean of its divisors is an integer number (9076523193).

Almost surely, 2^78557042470 is an apocalyptic number.

78557042470 is a deficient number, since it is larger than the sum of its proper divisors (66667328618).

78557042470 is a wasteful number, since it uses less digits than its factorization.

78557042470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212316375.

The product of its (nonzero) digits is 2195200, while the sum is 49.

The spelling of 78557042470 in words is "seventy-eight billion, five hundred fifty-seven million, forty-two thousand, four hundred seventy".