78415422846 has 8 divisors (see below), whose sum is σ = 156830845704. Its totient is φ = 26138474280.

The previous prime is 78415422829. The next prime is 78415422847. The reversal of 78415422846 is 64822451487.

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

78415422846 is an admirable number.

It is a super-2 number, since 2×78415422846² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78415422847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6534618565 + ... + 6534618576.

It is an arithmetic number, because the mean of its divisors is an integer number (19603855713).

Almost surely, 2^78415422846 is an apocalyptic number.

78415422846 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.

78415422846 is a wasteful number, since it uses less digits than its factorization.

78415422846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13069237146.

The product of its digits is 3440640, while the sum is 51.

The spelling of 78415422846 in words is "seventy-eight billion, four hundred fifteen million, four hundred twenty-two thousand, eight hundred forty-six".