50891515488 has 192 divisors, whose sum is σ = 165694636800. Its totient is φ = 15062906880.

The previous prime is 50891515471. The next prime is 50891515489. The reversal of 50891515488 is 88451519805.

50891515488 is a `hidden beast` number, since 5 + 0 + 8 + 9 + 151 + 5 + 488 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50891515489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 346408 + ... + 470936.

It is an arithmetic number, because the mean of its divisors is an integer number (862992900).

Almost surely, 2^50891515488 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 50891515488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82847318400).

50891515488 is an abundant number, since it is smaller than the sum of its proper divisors (114803121312).

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

50891515488 is a wasteful number, since it uses less digits than its factorization.

50891515488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124602 (or 124588 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 54.

The spelling of 50891515488 in words is "fifty billion, eight hundred ninety-one million, five hundred fifteen thousand, four hundred eighty-eight".