63121463217 has 32 divisors (see below), whose sum is σ = 93822182400. Its totient is φ = 41942219904.

The previous prime is 63121463179. The next prime is 63121463227. The reversal of 63121463217 is 71236412136.

63121463217 is a `hidden beast` number, since 6 + 3 + 1 + 2 + 1 + 4 + 632 + 17 = 666.

It is not a de Polignac number, because 63121463217 - 2⁷ = 63121463089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63121463227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11092509 + ... + 11098197.

It is an arithmetic number, because the mean of its divisors is an integer number (2931943200).

Almost surely, 2^63121463217 is an apocalyptic number.

It is an amenable number.

63121463217 is a deficient number, since it is larger than the sum of its proper divisors (30700719183).

63121463217 is a wasteful number, since it uses less digits than its factorization.

63121463217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6982 (or 6976 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

It can be divided in two parts, 631214 and 63217, that added together give a triangular number (694431 = T₁₁₇₈).

The spelling of 63121463217 in words is "sixty-three billion, one hundred twenty-one million, four hundred sixty-three thousand, two hundred seventeen".