50158558638 has 16 divisors (see below), whose sum is σ = 111463463760. Its totient is φ = 16719519528.

The previous prime is 50158558627. The next prime is 50158558643. The reversal of 50158558638 is 83685585105.

It is a happy number.

50158558638 is a `hidden beast` number, since 5 + 0 + 1 + 58 + 5 + 586 + 3 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 928862197 = 50158558638 / (5 + 0 + 1 + 5 + 8 + 5 + 5 + 8 + 6 + 3 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464431045 + ... + 464431152.

It is an arithmetic number, because the mean of its divisors is an integer number (6966466485).

Almost surely, 2^50158558638 is an apocalyptic number.

50158558638 is an abundant number, since it is smaller than the sum of its proper divisors (61304905122).

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

50158558638 is a wasteful number, since it uses less digits than its factorization.

50158558638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928862208 (or 928862202 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 54.

The spelling of 50158558638 in words is "fifty billion, one hundred fifty-eight million, five hundred fifty-eight thousand, six hundred thirty-eight".