63660144623 has 2 divisors, whose sum is σ = 63660144624. Its totient is φ = 63660144622.

The previous prime is 63660144619. The next prime is 63660144649. The reversal of 63660144623 is 32644106636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63660144623 - 2² = 63660144619 is a prime.

It is a super-2 number, since 2×63660144623² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63660144523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31830072311 + 31830072312.

It is an arithmetic number, because the mean of its divisors is an integer number (31830072312).

Almost surely, 2^63660144623 is an apocalyptic number.

63660144623 is a deficient number, since it is larger than the sum of its proper divisors (1).

63660144623 is an equidigital number, since it uses as much as digits as its factorization.

63660144623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 63660144623 in words is "sixty-three billion, six hundred sixty million, one hundred forty-four thousand, six hundred twenty-three".