63556857364 has 288 divisors, whose sum is σ = 161488131840. Its totient is φ = 21231175680.

The previous prime is 63556857361. The next prime is 63556857401. The reversal of 63556857364 is 46375865536.

It is a super-3 number, since 3×63556857364³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63556857299 and 63556857308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63556857361) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44351592 + ... + 44353024.

It is an arithmetic number, because the mean of its divisors is an integer number (560722680).

Almost surely, 2^63556857364 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 63556857364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80744065920).

63556857364 is an abundant number, since it is smaller than the sum of its proper divisors (97931274476).

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

63556857364 is a wasteful number, since it uses less digits than its factorization.

63556857364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551 (or 1538 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 58.

The spelling of 63556857364 in words is "sixty-three billion, five hundred fifty-six million, eight hundred fifty-seven thousand, three hundred sixty-four".