118640566423 has 2 divisors, whose sum is σ = 118640566424. Its totient is φ = 118640566422.

The previous prime is 118640566411. The next prime is 118640566427. The reversal of 118640566423 is 324665046811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118640566423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118640566427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59320283211 + 59320283212.

It is an arithmetic number, because the mean of its divisors is an integer number (59320283212).

Almost surely, 2^118640566423 is an apocalyptic number.

118640566423 is a deficient number, since it is larger than the sum of its proper divisors (1).

118640566423 is an equidigital number, since it uses as much as digits as its factorization.

118640566423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 118640566423 in words is "one hundred eighteen billion, six hundred forty million, five hundred sixty-six thousand, four hundred twenty-three".