118345623961 has 2 divisors, whose sum is σ = 118345623962. Its totient is φ = 118345623960.

The previous prime is 118345623887. The next prime is 118345623971. The reversal of 118345623961 is 169326543811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117498813961 + 846810000 = 342781^2 + 29100^2 .

It is an emirp because it is prime and its reverse (169326543811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118345623961 - 2²¹ = 118343526809 is a prime.

It is not a weakly prime, because it can be changed into another prime (118345623971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59172811980 + 59172811981.

It is an arithmetic number, because the mean of its divisors is an integer number (59172811981).

Almost surely, 2^118345623961 is an apocalyptic number.

It is an amenable number.

118345623961 is a deficient number, since it is larger than the sum of its proper divisors (1).

118345623961 is an equidigital number, since it uses as much as digits as its factorization.

118345623961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 49.

The spelling of 118345623961 in words is "one hundred eighteen billion, three hundred forty-five million, six hundred twenty-three thousand, nine hundred sixty-one".