118940668157 has 4 divisors (see below), whose sum is σ = 122777463936. Its totient is φ = 115103872380.

The previous prime is 118940668153. The next prime is 118940668163. The reversal of 118940668157 is 751866049811.

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, and also an emirpimes, since its reverse is a distinct semiprime: 751866049811 = 188633 ⋅3985867.

It is a cyclic number.

It is not a de Polignac number, because 118940668157 - 2² = 118940668153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118940668153) 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, 1918397843 + ... + 1918397904.

It is an arithmetic number, because the mean of its divisors is an integer number (30694365984).

Almost surely, 2^118940668157 is an apocalyptic number.

It is an amenable number.

118940668157 is a deficient number, since it is larger than the sum of its proper divisors (3836795779).

118940668157 is an equidigital number, since it uses as much as digits as its factorization.

118940668157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836795778.

The product of its (nonzero) digits is 2903040, while the sum is 56.

The spelling of 118940668157 in words is "one hundred eighteen billion, nine hundred forty million, six hundred sixty-eight thousand, one hundred fifty-seven".