50515514640 has 120 divisors (see below), whose sum is σ = 169741510848. Its totient is φ = 13463374080.

The previous prime is 50515514639. The next prime is 50515514657. The reversal of 50515514640 is 4641551505.

50515514640 is a `hidden beast` number, since 5 + 0 + 5 + 1 + 5 + 5 + 1 + 4 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 50515514595 and 50515514604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1354645 + ... + 1391435.

Almost surely, 2^50515514640 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 50515514640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84870755424).

50515514640 is an abundant number, since it is smaller than the sum of its proper divisors (119225996208).

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

50515514640 is a wasteful number, since it uses less digits than its factorization.

50515514640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38717 (or 38708 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 50515514640 in words is "fifty billion, five hundred fifteen million, five hundred fourteen thousand, six hundred forty".