63212455655 has 16 divisors (see below), whose sum is σ = 77556870144. Its totient is φ = 49437793440.

The previous prime is 63212455643. The next prime is 63212455673. The reversal of 63212455655 is 55655421236.

It is a de Polignac number, because none of the positive numbers 2^k-63212455655 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55190 + ... + 359820.

It is an arithmetic number, because the mean of its divisors is an integer number (4847304384).

Almost surely, 2^63212455655 is an apocalyptic number.

63212455655 is a deficient number, since it is larger than the sum of its proper divisors (14344414489).

63212455655 is a wasteful number, since it uses less digits than its factorization.

63212455655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305566.

The product of its digits is 1080000, while the sum is 44.

The spelling of 63212455655 in words is "sixty-three billion, two hundred twelve million, four hundred fifty-five thousand, six hundred fifty-five".