799737200640 has 1440 divisors, whose sum is σ = 3399547415040. Its totient is φ = 177768235008.

The previous prime is 799737200599. The next prime is 799737200677. The reversal of 799737200640 is 46002737997.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5093867442 + ... + 5093867598.

It is an arithmetic number, because the mean of its divisors is an integer number (2360796816).

Almost surely, 2^799737200640 is an apocalyptic number.

799737200640 is a gapful number since it is divisible by the number (70) 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 799737200640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699773707520).

799737200640 is an abundant number, since it is smaller than the sum of its proper divisors (2599810214400).

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

799737200640 is a wasteful number, since it uses less digits than its factorization.

799737200640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 54.

The spelling of 799737200640 in words is "seven hundred ninety-nine billion, seven hundred thirty-seven million, two hundred thousand, six hundred forty".