799178122512 has 960 divisors, whose sum is σ = 2997348157440. Its totient is φ = 194150753280.

The previous prime is 799178122459. The next prime is 799178122537. The reversal of 799178122512 is 215221871997.

799178122512 is a `hidden beast` number, since 7 + 99 + 17 + 8 + 1 + 22 + 512 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2727570238 + ... + 2727570530.

It is an arithmetic number, because the mean of its divisors is an integer number (3122237664).

Almost surely, 2^799178122512 is an apocalyptic number.

799178122512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 799178122512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498674078720).

799178122512 is an abundant number, since it is smaller than the sum of its proper divisors (2198170034928).

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

799178122512 is a wasteful number, since it uses less digits than its factorization.

799178122512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 442 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 54.

The spelling of 799178122512 in words is "seven hundred ninety-nine billion, one hundred seventy-eight million, one hundred twenty-two thousand, five hundred twelve".