50959997440 has 160 divisors (see below), whose sum is σ = 133545988224. Its totient is φ = 18495651840.

The previous prime is 50959997393. The next prime is 50959997507. The reversal of 50959997440 is 4479995905.

It is a tau number, because it is divible by the number of its divisors (160).

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 15 ways as a sum of consecutive naturals, for example, 18218122 + ... + 18220918.

Almost surely, 2^50959997440 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 50959997440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66772994112).

50959997440 is an abundant number, since it is smaller than the sum of its proper divisors (82585990784).

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

50959997440 is a wasteful number, since it uses less digits than its factorization.

50959997440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478 (or 3462 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 61.

The spelling of 50959997440 in words is "fifty billion, nine hundred fifty-nine million, nine hundred ninety-seven thousand, four hundred forty".