78791081478 has 8 divisors (see below), whose sum is σ = 157582162968. Its totient is φ = 26263693824.

The previous prime is 78791081477. The next prime is 78791081491. The reversal of 78791081478 is 87418019787.

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

78791081478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78791081477) 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, 6565923451 + ... + 6565923462.

It is an arithmetic number, because the mean of its divisors is an integer number (19697770371).

Almost surely, 2^78791081478 is an apocalyptic number.

78791081478 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.

78791081478 is a wasteful number, since it uses less digits than its factorization.

78791081478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13131846918.

The product of its (nonzero) digits is 6322176, while the sum is 60.

The spelling of 78791081478 in words is "seventy-eight billion, seven hundred ninety-one million, eighty-one thousand, four hundred seventy-eight".