63572935697 has 2 divisors, whose sum is σ = 63572935698. Its totient is φ = 63572935696.

The previous prime is 63572935693. The next prime is 63572935721. The reversal of 63572935697 is 79653927536.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45926204416 + 17646731281 = 214304^2 + 132841^2 .

It is a cyclic number.

It is not a de Polignac number, because 63572935697 - 2² = 63572935693 is a prime.

It is not a weakly prime, because it can be changed into another prime (63572935693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31786467848 + 31786467849.

It is an arithmetic number, because the mean of its divisors is an integer number (31786467849).

Almost surely, 2^63572935697 is an apocalyptic number.

It is an amenable number.

63572935697 is a deficient number, since it is larger than the sum of its proper divisors (1).

63572935697 is an equidigital number, since it uses as much as digits as its factorization.

63572935697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64297800, while the sum is 62.

The spelling of 63572935697 in words is "sixty-three billion, five hundred seventy-two million, nine hundred thirty-five thousand, six hundred ninety-seven".