118417081961 has 4 divisors (see below), whose sum is σ = 121170967632. Its totient is φ = 115663196292.

The previous prime is 118417081957. The next prime is 118417081969. The reversal of 118417081961 is 169180714811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118417081961 - 2² = 118417081957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118417081969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376942771 + ... + 1376942856.

It is an arithmetic number, because the mean of its divisors is an integer number (30292741908).

Almost surely, 2^118417081961 is an apocalyptic number.

It is an amenable number.

118417081961 is a deficient number, since it is larger than the sum of its proper divisors (2753885671).

118417081961 is an equidigital number, since it uses as much as digits as its factorization.

118417081961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753885670.

The product of its (nonzero) digits is 96768, while the sum is 47.

The spelling of 118417081961 in words is "one hundred eighteen billion, four hundred seventeen million, eighty-one thousand, nine hundred sixty-one".