118639674521 has 2 divisors, whose sum is σ = 118639674522. Its totient is φ = 118639674520.

The previous prime is 118639674509. The next prime is 118639674547. The reversal of 118639674521 is 125476936811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117018726400 + 1620948121 = 342080^2 + 40261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118639674521 is a prime.

It is not a weakly prime, because it can be changed into another prime (118639670521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59319837260 + 59319837261.

It is an arithmetic number, because the mean of its divisors is an integer number (59319837261).

Almost surely, 2^118639674521 is an apocalyptic number.

It is an amenable number.

118639674521 is a deficient number, since it is larger than the sum of its proper divisors (1).

118639674521 is an equidigital number, since it uses as much as digits as its factorization.

118639674521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 53.

The spelling of 118639674521 in words is "one hundred eighteen billion, six hundred thirty-nine million, six hundred seventy-four thousand, five hundred twenty-one".