50728267518 has 24 divisors (see below), whose sum is σ = 102693713928. Its totient is φ = 16705680912.

The previous prime is 50728267517. The next prime is 50728267531. The reversal of 50728267518 is 81576282705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50728267517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572305 + ... + 654972.

It is an arithmetic number, because the mean of its divisors is an integer number (4278904747).

Almost surely, 2^50728267518 is an apocalyptic number.

50728267518 is an abundant number, since it is smaller than the sum of its proper divisors (51965446410).

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

50728267518 is a wasteful number, since it uses less digits than its factorization.

50728267518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227448 (or 1227365 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 50728267518 in words is "fifty billion, seven hundred twenty-eight million, two hundred sixty-seven thousand, five hundred eighteen".