63400552056 has 48 divisors (see below), whose sum is σ = 172262010960. Its totient is φ = 21065556480.

The previous prime is 63400552051. The next prime is 63400552087. The reversal of 63400552056 is 65025500436.

It is a happy number.

63400552056 is a `hidden beast` number, since 63 + 40 + 0 + 552 + 0 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 63400552056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63400552051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1393305 + ... + 1438088.

It is an arithmetic number, because the mean of its divisors is an integer number (3588791895).

Almost surely, 2^63400552056 is an apocalyptic number.

It is an amenable number.

63400552056 is an abundant number, since it is smaller than the sum of its proper divisors (108861458904).

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

63400552056 is a wasteful number, since it uses less digits than its factorization.

63400552056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831716 (or 2831709 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 63400552056 in words is "sixty-three billion, four hundred million, five hundred fifty-two thousand, fifty-six".