118365891625 has 8 divisors (see below), whose sum is σ = 147720632904. Its totient is φ = 94692713200.

The previous prime is 118365891617. The next prime is 118365891697. The reversal of 118365891625 is 526198563811.

It can be written as a sum of positive squares in 4 ways, for example, as 310429161 + 118055462464 = 17619^2 + 343592^2 .

It is not a de Polignac number, because 118365891625 - 2³ = 118365891617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473463442 + ... + 473463691.

It is an arithmetic number, because the mean of its divisors is an integer number (18465079113).

Almost surely, 2^118365891625 is an apocalyptic number.

It is an amenable number.

118365891625 is a deficient number, since it is larger than the sum of its proper divisors (29354741279).

118365891625 is an frugal number, since it uses more digits than its factorization.

118365891625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946927148 (or 946927138 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 55.

The spelling of 118365891625 in words is "one hundred eighteen billion, three hundred sixty-five million, eight hundred ninety-one thousand, six hundred twenty-five".