93518621397 has 6 divisors (see below), whose sum is σ = 135082453142. Its totient is φ = 62345747592.

The previous prime is 93518621389. The next prime is 93518621401. The reversal of 93518621397 is 79312681539.

93518621397 is a `hidden beast` number, since 9 + 3 + 5 + 1 + 8 + 621 + 3 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 83919716721 + 9598904676 = 289689^2 + 97974^2 .

It is not a de Polignac number, because 93518621397 - 2³ = 93518621389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93518621387) 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 5 ways as a sum of consecutive naturals, for example, 5195478958 + ... + 5195478975.

Almost surely, 2^93518621397 is an apocalyptic number.

It is an amenable number.

93518621397 is a deficient number, since it is larger than the sum of its proper divisors (41563831745).

93518621397 is a wasteful number, since it uses less digits than its factorization.

93518621397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10390957939 (or 10390957936 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The spelling of 93518621397 in words is "ninety-three billion, five hundred eighteen million, six hundred twenty-one thousand, three hundred ninety-seven".