63440718023 has 2 divisors, whose sum is σ = 63440718024. Its totient is φ = 63440718022.

The previous prime is 63440718007. The next prime is 63440718053. The reversal of 63440718023 is 32081704436.

63440718023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63440718023 - 2⁴ = 63440718007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63440718053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31720359011 + 31720359012.

It is an arithmetic number, because the mean of its divisors is an integer number (31720359012).

Almost surely, 2^63440718023 is an apocalyptic number.

63440718023 is a deficient number, since it is larger than the sum of its proper divisors (1).

63440718023 is an equidigital number, since it uses as much as digits as its factorization.

63440718023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 63440718023 in words is "sixty-three billion, four hundred forty million, seven hundred eighteen thousand, twenty-three".