51498946368 has 112 divisors (see below), whose sum is σ = 152553741120. Its totient is φ = 17035200000.

The previous prime is 51498946337. The next prime is 51498946417. The reversal of 51498946368 is 86364989415.

51498946368 is a `hidden beast` number, since 51 + 49 + 89 + 463 + 6 + 8 = 666.

It is a congruent number.

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, 112618 + ... + 340118.

Almost surely, 2^51498946368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51498946368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76276870560).

51498946368 is an abundant number, since it is smaller than the sum of its proper divisors (101054794752).

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

51498946368 is a wasteful number, since it uses less digits than its factorization.

51498946368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227653 (or 227637 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 51498946368 in words is "fifty-one billion, four hundred ninety-eight million, nine hundred forty-six thousand, three hundred sixty-eight".