50151015990 has 48 divisors (see below), whose sum is σ = 130484351088. Its totient is φ = 13364198208.

The previous prime is 50151015977. The next prime is 50151015997. The reversal of 50151015990 is 9951015105.

50151015990 is a `hidden beast` number, since 5 + 0 + 1 + 510 + 1 + 59 + 90 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50151015997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66817 + ... + 323676.

It is an arithmetic number, because the mean of its divisors is an integer number (2718423981).

Almost surely, 2^50151015990 is an apocalyptic number.

50151015990 is an abundant number, since it is smaller than the sum of its proper divisors (80333335098).

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

50151015990 is a wasteful number, since it uses less digits than its factorization.

50151015990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391933 (or 391930 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 36.

The spelling of 50151015990 in words is "fifty billion, one hundred fifty-one million, fifteen thousand, nine hundred ninety".