78831290418 has 8 divisors (see below), whose sum is σ = 157662580848. Its totient is φ = 26277096804.

The previous prime is 78831290413. The next prime is 78831290431. The reversal of 78831290418 is 81409213887.

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

78831290418 is an admirable number.

It is a super-2 number, since 2×78831290418² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78831290413) 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, 6569274196 + ... + 6569274207.

It is an arithmetic number, because the mean of its divisors is an integer number (19707822606).

Almost surely, 2^78831290418 is an apocalyptic number.

78831290418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78831290418 is a wasteful number, since it uses less digits than its factorization.

78831290418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13138548408.

The product of its (nonzero) digits is 774144, while the sum is 51.

The spelling of 78831290418 in words is "seventy-eight billion, eight hundred thirty-one million, two hundred ninety thousand, four hundred eighteen".