117578118877 has 8 divisors (see below), whose sum is σ = 120605019192. Its totient is φ = 114558796800.

The previous prime is 117578118857. The next prime is 117578118887. The reversal of 117578118877 is 778811875711.

It can be written as a sum of positive squares in 4 ways, for example, as 672935481 + 116905183396 = 25941^2 + 341914^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117578118877 is a prime.

It is a super-2 number, since 2×117578118877² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117578118857) 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, 1863124 + ... + 1925197.

It is an arithmetic number, because the mean of its divisors is an integer number (15075627399).

Almost surely, 2^117578118877 is an apocalyptic number.

It is an amenable number.

117578118877 is a deficient number, since it is larger than the sum of its proper divisors (3026900315).

117578118877 is an equidigital number, since it uses as much as digits as its factorization.

117578118877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789119.

The product of its digits is 6146560, while the sum is 61.

The spelling of 117578118877 in words is "one hundred seventeen billion, five hundred seventy-eight million, one hundred eighteen thousand, eight hundred seventy-seven".