118638000427 has 2 divisors, whose sum is σ = 118638000428. Its totient is φ = 118638000426.

The previous prime is 118638000407. The next prime is 118638000451. The reversal of 118638000427 is 724000836811.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118638000427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118638000427.

It is not a weakly prime, because it can be changed into another prime (118638000407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59319000213 + 59319000214.

It is an arithmetic number, because the mean of its divisors is an integer number (59319000214).

Almost surely, 2^118638000427 is an apocalyptic number.

118638000427 is a deficient number, since it is larger than the sum of its proper divisors (1).

118638000427 is an equidigital number, since it uses as much as digits as its factorization.

118638000427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 118638000427 in words is "one hundred eighteen billion, six hundred thirty-eight million, four hundred twenty-seven", and thus it is an aban number.