799399960128 has 1344 divisors, whose sum is σ = 3155110133760. Its totient is φ = 187246080000.

The previous prime is 799399960081. The next prime is 799399960129. The reversal of 799399960128 is 821069993997.

799399960128 is a `hidden beast` number, since 7 + 9 + 9 + 3 + 9 + 9 + 9 + 601 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (799399960129) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1854756073 + ... + 1854756503.

Almost surely, 2^799399960128 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 799399960128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1577555066880).

799399960128 is an abundant number, since it is smaller than the sum of its proper divisors (2355710173632).

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

799399960128 is a wasteful number, since it uses less digits than its factorization.

799399960128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 119042784, while the sum is 72.

The spelling of 799399960128 in words is "seven hundred ninety-nine billion, three hundred ninety-nine million, nine hundred sixty thousand, one hundred twenty-eight".