63158879520 has 384 divisors, whose sum is σ = 251641313280. Its totient is φ = 14645283840.

The previous prime is 63158879501. The next prime is 63158879521. The reversal of 63158879520 is 2597885136.

63158879520 is a `hidden beast` number, since 6 + 3 + 1 + 588 + 7 + 9 + 52 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (63158879521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1064067 + ... + 1121853.

It is an arithmetic number, because the mean of its divisors is an integer number (655315920).

Almost surely, 2^63158879520 is an apocalyptic number.

63158879520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63158879520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125820656640).

63158879520 is an abundant number, since it is smaller than the sum of its proper divisors (188482433760).

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

63158879520 is a wasteful number, since it uses less digits than its factorization.

63158879520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57845 (or 57831 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 63158879520 in words is "sixty-three billion, one hundred fifty-eight million, eight hundred seventy-nine thousand, five hundred twenty".