50991402937344 has 264 divisors, whose sum is σ = 147032720552880. Its totient is φ = 15656899313664.

The previous prime is 50991402937339. The next prime is 50991402937357. The reversal of 50991402937344 is 44373920419905.

It is a super-2 number, since 2×50991402937344² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115141812 + ... + 115583820.

Almost surely, 2^{50991402937344} 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 50991402937344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73516360276440).

50991402937344 is an abundant number, since it is smaller than the sum of its proper divisors (96041317615536).

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

50991402937344 is a wasteful number, since it uses less digits than its factorization.

50991402937344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442143 (or 442078 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 50991402937344 in words is "fifty trillion, nine hundred ninety-one billion, four hundred two million, nine hundred thirty-seven thousand, three hundred forty-four".