63660484091 has 2 divisors, whose sum is σ = 63660484092. Its totient is φ = 63660484090.

The previous prime is 63660484061. The next prime is 63660484099. The reversal of 63660484091 is 19048406636.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63660484091 is a prime.

It is not a weakly prime, because it can be changed into another prime (63660484099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31830242045 + 31830242046.

It is an arithmetic number, because the mean of its divisors is an integer number (31830242046).

Almost surely, 2^63660484091 is an apocalyptic number.

63660484091 is a deficient number, since it is larger than the sum of its proper divisors (1).

63660484091 is an equidigital number, since it uses as much as digits as its factorization.

63660484091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 63660484091 in words is "sixty-three billion, six hundred sixty million, four hundred eighty-four thousand, ninety-one".