118640541507 has 4 divisors (see below), whose sum is σ = 158187388680. Its totient is φ = 79093694336.

The previous prime is 118640541491. The next prime is 118640541557. The reversal of 118640541507 is 705145046811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118640541507 - 2⁴ = 118640541491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118640541557) 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, 19773423582 + ... + 19773423587.

It is an arithmetic number, because the mean of its divisors is an integer number (39546847170).

Almost surely, 2^118640541507 is an apocalyptic number.

118640541507 is a deficient number, since it is larger than the sum of its proper divisors (39546847173).

118640541507 is an equidigital number, since it uses as much as digits as its factorization.

118640541507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39546847172.

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 118640541507 in words is "one hundred eighteen billion, six hundred forty million, five hundred forty-one thousand, five hundred seven".