63311662501 has 2 divisors, whose sum is σ = 63311662502. Its totient is φ = 63311662500.

The previous prime is 63311662433. The next prime is 63311662507. The reversal of 63311662501 is 10526611336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61566511876 + 1745150625 = 248126^2 + 41775^2 .

It is a cyclic number.

It is not a de Polignac number, because 63311662501 - 2⁹ = 63311661989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63311662507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31655831250 + 31655831251.

It is an arithmetic number, because the mean of its divisors is an integer number (31655831251).

Almost surely, 2^63311662501 is an apocalyptic number.

It is an amenable number.

63311662501 is a deficient number, since it is larger than the sum of its proper divisors (1).

63311662501 is an equidigital number, since it uses as much as digits as its factorization.

63311662501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 63311662501 in words is "sixty-three billion, three hundred eleven million, six hundred sixty-two thousand, five hundred one".