51057229278 has 32 divisors (see below), whose sum is σ = 111619130112. Its totient is φ = 15441118400.

The previous prime is 51057229273. The next prime is 51057229309. The reversal of 51057229278 is 87292275015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51057229273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735783 + ... + 802178.

It is an arithmetic number, because the mean of its divisors is an integer number (3488097816).

Almost surely, 2^51057229278 is an apocalyptic number.

51057229278 is an abundant number, since it is smaller than the sum of its proper divisors (60561900834).

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

51057229278 is a wasteful number, since it uses less digits than its factorization.

51057229278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538480.

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 51057229278 in words is "fifty-one billion, fifty-seven million, two hundred twenty-nine thousand, two hundred seventy-eight".