117817011541 has 4 divisors (see below), whose sum is σ = 118427462572. Its totient is φ = 117206560512.

The previous prime is 117817011511. The next prime is 117817011547. The reversal of 117817011541 is 145110718711.

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 69363756900 + 48453254641 = 263370^2 + 220121^2 .

It is a cyclic number.

It is not a de Polignac number, because 117817011541 - 2⁵ = 117817011509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117817011541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117817011547) 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, 305225226 + ... + 305225611.

It is an arithmetic number, because the mean of its divisors is an integer number (29606865643).

Almost surely, 2^117817011541 is an apocalyptic number.

It is an amenable number.

117817011541 is a deficient number, since it is larger than the sum of its proper divisors (610451031).

117817011541 is an equidigital number, since it uses as much as digits as its factorization.

117817011541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610451030.

The product of its (nonzero) digits is 7840, while the sum is 37.

The spelling of 117817011541 in words is "one hundred seventeen billion, eight hundred seventeen million, eleven thousand, five hundred forty-one".