63513547631 has 2 divisors, whose sum is σ = 63513547632. Its totient is φ = 63513547630.

The previous prime is 63513547553. The next prime is 63513547661. The reversal of 63513547631 is 13674531536.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63513547631 - 2¹⁴ = 63513531247 is a prime.

It is a super-2 number, since 2×63513547631² (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 (63513547661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31756773815 + 31756773816.

It is an arithmetic number, because the mean of its divisors is an integer number (31756773816).

Almost surely, 2^63513547631 is an apocalyptic number.

63513547631 is a deficient number, since it is larger than the sum of its proper divisors (1).

63513547631 is an equidigital number, since it uses as much as digits as its factorization.

63513547631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 44.

The spelling of 63513547631 in words is "sixty-three billion, five hundred thirteen million, five hundred forty-seven thousand, six hundred thirty-one".