118495807657 has 4 divisors (see below), whose sum is σ = 122581870020. Its totient is φ = 114409745296.

The previous prime is 118495807637. The next prime is 118495807663. The reversal of 118495807657 is 756708594811.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39977603136 + 78518204521 = 199944^2 + 280211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118495807657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118495807595 and 118495807604.

It is not an unprimeable number, because it can be changed into a prime (118495807637) 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, 2043031138 + ... + 2043031195.

It is an arithmetic number, because the mean of its divisors is an integer number (30645467505).

Almost surely, 2^118495807657 is an apocalyptic number.

It is an amenable number.

118495807657 is a deficient number, since it is larger than the sum of its proper divisors (4086062363).

118495807657 is an equidigital number, since it uses as much as digits as its factorization.

118495807657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086062362.

The product of its (nonzero) digits is 16934400, while the sum is 61.

The spelling of 118495807657 in words is "one hundred eighteen billion, four hundred ninety-five million, eight hundred seven thousand, six hundred fifty-seven".