63172334890 has 32 divisors (see below), whose sum is σ = 131894146944. Its totient is φ = 21335814720.

The previous prime is 63172334887. The next prime is 63172334959. The reversal of 63172334890 is 9843327136.

It is a super-2 number, since 2×63172334890² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63172334890.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6730101 + ... + 6739480.

It is an arithmetic number, because the mean of its divisors is an integer number (4121692092).

Almost surely, 2^63172334890 is an apocalyptic number.

63172334890 is an abundant number, since it is smaller than the sum of its proper divisors (68721812054).

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

63172334890 is a wasteful number, since it uses less digits than its factorization.

63172334890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13469662.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 63172334890 in words is "sixty-three billion, one hundred seventy-two million, three hundred thirty-four thousand, eight hundred ninety".