118193626897 has 4 divisors (see below), whose sum is σ = 118474372276. Its totient is φ = 117912881520.

The previous prime is 118193626891. The next prime is 118193626919. The reversal of 118193626897 is 798626391811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 798626391811 = 53 ⋅15068422487.

It can be written as a sum of positive squares in 2 ways, for example, as 20552376321 + 97641250576 = 143361^2 + 312476^2 .

It is a cyclic number.

It is not a de Polignac number, because 118193626897 - 2⁷ = 118193626769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118193626891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140372058 + ... + 140372899.

It is an arithmetic number, because the mean of its divisors is an integer number (29618593069).

Almost surely, 2^118193626897 is an apocalyptic number.

It is an amenable number.

118193626897 is a deficient number, since it is larger than the sum of its proper divisors (280745379).

118193626897 is an equidigital number, since it uses as much as digits as its factorization.

118193626897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280745378.

The product of its digits is 7838208, while the sum is 61.

The spelling of 118193626897 in words is "one hundred eighteen billion, one hundred ninety-three million, six hundred twenty-six thousand, eight hundred ninety-seven".