117581452397 has 4 divisors (see below), whose sum is σ = 118723020000. Its totient is φ = 116439884796.

The previous prime is 117581452393. The next prime is 117581452433. The reversal of 117581452397 is 793254185711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117581452397 - 2² = 117581452393 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 (117581452393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570783647 + ... + 570783852.

It is an arithmetic number, because the mean of its divisors is an integer number (29680755000).

Almost surely, 2^117581452397 is an apocalyptic number.

It is an amenable number.

117581452397 is a deficient number, since it is larger than the sum of its proper divisors (1141567603).

117581452397 is a wasteful number, since it uses less digits than its factorization.

117581452397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141567602.

The product of its digits is 2116800, while the sum is 53.

The spelling of 117581452397 in words is "one hundred seventeen billion, five hundred eighty-one million, four hundred fifty-two thousand, three hundred ninety-seven".