50172021870 has 48 divisors (see below), whose sum is σ = 127083952080. Its totient is φ = 12675034368.

The previous prime is 50172021863. The next prime is 50172021917. The reversal of 50172021870 is 7812027105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2305515 + ... + 2327174.

It is an arithmetic number, because the mean of its divisors is an integer number (2647582335).

Almost surely, 2^50172021870 is an apocalyptic number.

50172021870 is an abundant number, since it is smaller than the sum of its proper divisors (76911930210).

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

50172021870 is a wasteful number, since it uses less digits than its factorization.

50172021870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4632737 (or 4632718 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 33.

Adding to 50172021870 its reverse (7812027105), we get a palindrome (57984048975).

The spelling of 50172021870 in words is "fifty billion, one hundred seventy-two million, twenty-one thousand, eight hundred seventy".