118878123661 has 8 divisors (see below), whose sum is σ = 132701161824. Its totient is φ = 105557741520.

The previous prime is 118878123659. The next prime is 118878123677. The reversal of 118878123661 is 166321878811.

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

It is not a de Polignac number, because 118878123661 - 2¹ = 118878123659 is a prime.

It is a super-4 number, since 4×118878123661⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 118878123599 and 118878123608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118878123601) 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, 125663506 + ... + 125664451.

It is an arithmetic number, because the mean of its divisors is an integer number (16587645228).

Almost surely, 2^118878123661 is an apocalyptic number.

118878123661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

118878123661 is a deficient number, since it is larger than the sum of its proper divisors (13823038163).

118878123661 is a wasteful number, since it uses less digits than its factorization.

118878123661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251328011.

The product of its digits is 774144, while the sum is 52.

The spelling of 118878123661 in words is "one hundred eighteen billion, eight hundred seventy-eight million, one hundred twenty-three thousand, six hundred sixty-one".