63216577631 has 2 divisors, whose sum is σ = 63216577632. Its totient is φ = 63216577630.

The previous prime is 63216577607. The next prime is 63216577657. The reversal of 63216577631 is 13677561236.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63216577631 is a prime.

It is a super-2 number, since 2×63216577631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63216573631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31608288815 + 31608288816.

It is an arithmetic number, because the mean of its divisors is an integer number (31608288816).

Almost surely, 2^63216577631 is an apocalyptic number.

63216577631 is a deficient number, since it is larger than the sum of its proper divisors (1).

63216577631 is an equidigital number, since it uses as much as digits as its factorization.

63216577631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 47.

The spelling of 63216577631 in words is "sixty-three billion, two hundred sixteen million, five hundred seventy-seven thousand, six hundred thirty-one".