78616155477 has 32 divisors (see below), whose sum is σ = 109672848000. Its totient is φ = 50027846400.

The previous prime is 78616155469. The next prime is 78616155479. The reversal of 78616155477 is 77455161687.

It is not a de Polignac number, because 78616155477 - 2³ = 78616155469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78616155479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6223674 + ... + 6236292.

It is an arithmetic number, because the mean of its divisors is an integer number (3427276500).

Almost surely, 2^78616155477 is an apocalyptic number.

It is an amenable number.

78616155477 is a deficient number, since it is larger than the sum of its proper divisors (31056692523).

78616155477 is a wasteful number, since it uses less digits than its factorization.

78616155477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13461.

The product of its digits is 9878400, while the sum is 57.

The spelling of 78616155477 in words is "seventy-eight billion, six hundred sixteen million, one hundred fifty-five thousand, four hundred seventy-seven".