63376662521 has 2 divisors, whose sum is σ = 63376662522. Its totient is φ = 63376662520.

The previous prime is 63376662457. The next prime is 63376662533. The reversal of 63376662521 is 12526667336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50832662521 + 12544000000 = 225461^2 + 112000^2 .

It is a cyclic number.

It is not a de Polignac number, because 63376662521 - 2⁶ = 63376662457 is a prime.

It is not a weakly prime, because it can be changed into another prime (63376662551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31688331260 + 31688331261.

It is an arithmetic number, because the mean of its divisors is an integer number (31688331261).

Almost surely, 2^63376662521 is an apocalyptic number.

It is an amenable number.

63376662521 is a deficient number, since it is larger than the sum of its proper divisors (1).

63376662521 is an equidigital number, since it uses as much as digits as its factorization.

63376662521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 47.

The spelling of 63376662521 in words is "sixty-three billion, three hundred seventy-six million, six hundred sixty-two thousand, five hundred twenty-one".