117421725917 has 2 divisors, whose sum is σ = 117421725918. Its totient is φ = 117421725916.

The previous prime is 117421725907. The next prime is 117421725977. The reversal of 117421725917 is 719527124711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66640906201 + 50780819716 = 258149^2 + 225346^2 .

It is a cyclic number.

It is not a de Polignac number, because 117421725917 - 2⁴ = 117421725901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117421725907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58710862958 + 58710862959.

It is an arithmetic number, because the mean of its divisors is an integer number (58710862959).

Almost surely, 2^117421725917 is an apocalyptic number.

It is an amenable number.

117421725917 is a deficient number, since it is larger than the sum of its proper divisors (1).

117421725917 is an equidigital number, since it uses as much as digits as its factorization.

117421725917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 47.

The spelling of 117421725917 in words is "one hundred seventeen billion, four hundred twenty-one million, seven hundred twenty-five thousand, nine hundred seventeen".