63516213216 has 36 divisors (see below), whose sum is σ = 180624232152. Its totient is φ = 21172070976.

The previous prime is 63516213209. The next prime is 63516213227. The reversal of 63516213216 is 61231261536.

63516213216 is a `hidden beast` number, since 6 + 3 + 5 + 1 + 621 + 3 + 21 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110270916 + ... + 110271491.

It is an arithmetic number, because the mean of its divisors is an integer number (5017339782).

Almost surely, 2^63516213216 is an apocalyptic number.

It is an amenable number.

63516213216 is an abundant number, since it is smaller than the sum of its proper divisors (117108018936).

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

63516213216 is a wasteful number, since it uses less digits than its factorization.

63516213216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220542423 (or 220542412 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The spelling of 63516213216 in words is "sixty-three billion, five hundred sixteen million, two hundred thirteen thousand, two hundred sixteen".