117865023861 has 8 divisors (see below), whose sum is σ = 169242085600. Its totient is φ = 72532322352.

The previous prime is 117865023847. The next prime is 117865023863. The reversal of 117865023861 is 168320568711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117865023861 - 2⁶ = 117865023797 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 117865023861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117865023863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511090011 + ... + 1511090088.

It is an arithmetic number, because the mean of its divisors is an integer number (21155260700).

Almost surely, 2^117865023861 is an apocalyptic number.

It is an amenable number.

117865023861 is a deficient number, since it is larger than the sum of its proper divisors (51377061739).

117865023861 is a wasteful number, since it uses less digits than its factorization.

117865023861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022180115.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 117865023861 in words is "one hundred seventeen billion, eight hundred sixty-five million, twenty-three thousand, eight hundred sixty-one".