63081765601 has 2 divisors, whose sum is σ = 63081765602. Its totient is φ = 63081765600.

The previous prime is 63081765469. The next prime is 63081765619. The reversal of 63081765601 is 10656718036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55856595600 + 7225170001 = 236340^2 + 85001^2 .

It is a cyclic number.

It is not a de Polignac number, because 63081765601 - 2²⁵ = 63048211169 is a prime.

It is not a weakly prime, because it can be changed into another prime (63081765401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31540882800 + 31540882801.

It is an arithmetic number, because the mean of its divisors is an integer number (31540882801).

Almost surely, 2^63081765601 is an apocalyptic number.

It is an amenable number.

63081765601 is a deficient number, since it is larger than the sum of its proper divisors (1).

63081765601 is an equidigital number, since it uses as much as digits as its factorization.

63081765601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 63081765601 in words is "sixty-three billion, eighty-one million, seven hundred sixty-five thousand, six hundred one".