63672342872989 has 2 divisors, whose sum is σ = 63672342872990. Its totient is φ = 63672342872988.

The previous prime is 63672342872947. The next prime is 63672342872993. The reversal of 63672342872989 is 98927824327636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47228644736100 + 16443698136889 = 6872310^2 + 4055083^2 .

It is a cyclic number.

It is not a de Polignac number, because 63672342872989 - 2³⁷ = 63534903919517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63672342873989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31836171436494 + 31836171436495.

It is an arithmetic number, because the mean of its divisors is an integer number (31836171436495).

Almost surely, 2^{63672342872989} is an apocalyptic number.

It is an amenable number.

63672342872989 is a deficient number, since it is larger than the sum of its proper divisors (1).

63672342872989 is an equidigital number, since it uses as much as digits as its factorization.

63672342872989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2633637888, while the sum is 76.

The spelling of 63672342872989 in words is "sixty-three trillion, six hundred seventy-two billion, three hundred forty-two million, eight hundred seventy-two thousand, nine hundred eighty-nine".