53712778416 has 80 divisors (see below), whose sum is σ = 157953818880. Its totient is φ = 15568917760.

The previous prime is 53712778391. The next prime is 53712778421. The reversal of 53712778416 is 61487721735.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2199351 + ... + 2223638.

It is an arithmetic number, because the mean of its divisors is an integer number (1974422736).

Almost surely, 2^53712778416 is an apocalyptic number.

It is an amenable number.

53712778416 is an abundant number, since it is smaller than the sum of its proper divisors (104241040464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53712778416 is a wasteful number, since it uses less digits than its factorization.

53712778416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423034 (or 4423028 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 51.

The spelling of 53712778416 in words is "fifty-three billion, seven hundred twelve million, seven hundred seventy-eight thousand, four hundred sixteen".