50998972640256 has 308 divisors, whose sum is σ = 155443140121800. Its totient is φ = 16711513325568.

The previous prime is 50998972640219. The next prime is 50998972640261. The reversal of 50998972640256 is 65204627989905.

50998972640256 is a `hidden beast` number, since 5 + 0 + 99 + 89 + 7 + 2 + 6 + 402 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 43464300 + ... + 44622228.

Almost surely, 2^{50998972640256} 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 50998972640256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77721570060900).

50998972640256 is an abundant number, since it is smaller than the sum of its proper divisors (104444167481544).

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

50998972640256 is an equidigital number, since it uses as much as digits as its factorization.

50998972640256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158026 (or 1157993 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 72.

The spelling of 50998972640256 in words is "fifty trillion, nine hundred ninety-eight billion, nine hundred seventy-two million, six hundred forty thousand, two hundred fifty-six".