51982274416 has 20 divisors (see below), whose sum is σ = 106640107632. Its totient is φ = 24462246656.

The previous prime is 51982274387. The next prime is 51982274431. The reversal of 51982274416 is 61447228915.

It is a self number, because there is not a number n which added to its sum of digits gives 51982274416.

It is a congruent number.

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, 95555380 + ... + 95555923.

Almost surely, 2^51982274416 is an apocalyptic number.

It is an amenable number.

51982274416 is an abundant number, since it is smaller than the sum of its proper divisors (54657833216).

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

51982274416 is a wasteful number, since it uses less digits than its factorization.

51982274416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191111328 (or 191111322 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The spelling of 51982274416 in words is "fifty-one billion, nine hundred eighty-two million, two hundred seventy-four thousand, four hundred sixteen".