78818433272472 has 384 divisors, whose sum is σ = 215774919360000. Its totient is φ = 23920726781952.

The previous prime is 78818433272459. The next prime is 78818433272479. The reversal of 78818433272472 is 27427233481887.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78818433272479) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12426046533 + ... + 12426052875.

It is an arithmetic number, because the mean of its divisors is an integer number (561913852500).

Almost surely, 2^{78818433272472} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78818433272472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107887459680000).

78818433272472 is an abundant number, since it is smaller than the sum of its proper divisors (136956486087528).

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

78818433272472 is a wasteful number, since it uses less digits than its factorization.

78818433272472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675 (or 6618 counting only the distinct ones).

The product of its digits is 202309632, while the sum is 66.

The spelling of 78818433272472 in words is "seventy-eight trillion, eight hundred eighteen billion, four hundred thirty-three million, two hundred seventy-two thousand, four hundred seventy-two".