50771738520 has 128 divisors (see below), whose sum is σ = 169654392000. Its totient is φ = 13505909760.

The previous prime is 50771738509. The next prime is 50771738533. The reversal of 50771738520 is 2583717705.

50771738520 is a `hidden beast` number, since 50 + 7 + 7 + 1 + 73 + 8 + 520 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384250 + ... + 499190.

Almost surely, 2^50771738520 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 50771738520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84827196000).

50771738520 is an abundant number, since it is smaller than the sum of its proper divisors (118882653480).

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

50771738520 is a wasteful number, since it uses less digits than its factorization.

50771738520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115370 (or 115360 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

The spelling of 50771738520 in words is "fifty billion, seven hundred seventy-one million, seven hundred thirty-eight thousand, five hundred twenty".