63115685500 has 96 divisors (see below), whose sum is σ = 157854348288. Its totient is φ = 21596040000.

The previous prime is 63115685491. The next prime is 63115685527. The reversal of 63115685500 is 558651136.

It is a super-2 number, since 2×63115685500² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1742575 + ... + 1778425.

It is an arithmetic number, because the mean of its divisors is an integer number (1644316128).

Almost surely, 2^63115685500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63115685500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78927174144).

63115685500 is an abundant number, since it is smaller than the sum of its proper divisors (94738662788).

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

63115685500 is a wasteful number, since it uses less digits than its factorization.

63115685500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36380 (or 36368 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 63115685500 in words is "sixty-three billion, one hundred fifteen million, six hundred eighty-five thousand, five hundred".