50539645440 has 800 divisors, whose sum is σ = 195715776960. Its totient is φ = 12469469184.

The previous prime is 50539645417. The next prime is 50539645459. The reversal of 50539645440 is 4454693505.

50539645440 is a `hidden beast` number, since 5 + 0 + 539 + 64 + 54 + 4 + 0 = 666.

It is a super-2 number, since 2×50539645440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 856604131 + ... + 856604189.

Almost surely, 2^50539645440 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 50539645440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97857888480).

50539645440 is an abundant number, since it is smaller than the sum of its proper divisors (145176131520).

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

50539645440 is an frugal number, since it uses more digits than its factorization.

50539645440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 50539645440 in words is "fifty billion, five hundred thirty-nine million, six hundred forty-five thousand, four hundred forty".