118145109497 has 16 divisors (see below), whose sum is σ = 125082532800. Its totient is φ = 111423224640.

The previous prime is 118145109487. The next prime is 118145109499. The reversal of 118145109497 is 794901541811.

It is not a de Polignac number, because 118145109497 - 2⁸ = 118145109241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118145109499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48722 + ... + 488532.

It is an arithmetic number, because the mean of its divisors is an integer number (7817658300).

Almost surely, 2^118145109497 is an apocalyptic number.

It is an amenable number.

118145109497 is a deficient number, since it is larger than the sum of its proper divisors (6937423303).

118145109497 is a wasteful number, since it uses less digits than its factorization.

118145109497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440056.

The product of its (nonzero) digits is 362880, while the sum is 50.

The spelling of 118145109497 in words is "one hundred eighteen billion, one hundred forty-five million, one hundred nine thousand, four hundred ninety-seven".