63858553556 has 12 divisors (see below), whose sum is σ = 127717107168. Its totient is φ = 27367951512.

The previous prime is 63858553553. The next prime is 63858553597. The reversal of 63858553556 is 65535585836.

63858553556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

63858553556 is an admirable number.

It is a super-4 number, since 4×63858553556⁴ (a number of 44 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63858553495 and 63858553504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63858553553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1140331286 + ... + 1140331341.

It is an arithmetic number, because the mean of its divisors is an integer number (10643092264).

Almost surely, 2^63858553556 is an apocalyptic number.

It is an amenable number.

63858553556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

63858553556 is a wasteful number, since it uses less digits than its factorization.

63858553556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280662638 (or 2280662636 counting only the distinct ones).

The product of its digits is 64800000, while the sum is 59.

The spelling of 63858553556 in words is "sixty-three billion, eight hundred fifty-eight million, five hundred fifty-three thousand, five hundred fifty-six".