79398040023456 has 1152 divisors, whose sum is σ = 278884694753280. Its totient is φ = 19520095795200.

The previous prime is 79398040023443. The next prime is 79398040023473. The reversal of 79398040023456 is 65432004089397.

It is a self number, because there is not a number n which added to its sum of digits gives 79398040023456.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 94634135485 + ... + 94634136323.

It is an arithmetic number, because the mean of its divisors is an integer number (242087408640).

Almost surely, 2^{79398040023456} 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 79398040023456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139442347376640).

79398040023456 is an abundant number, since it is smaller than the sum of its proper divisors (199486654729824).

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

79398040023456 is a wasteful number, since it uses less digits than its factorization.

79398040023456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 60.

The spelling of 79398040023456 in words is "seventy-nine trillion, three hundred ninety-eight billion, forty million, twenty-three thousand, four hundred fifty-six".