799912687680 has 196 divisors, whose sum is σ = 2855882522412. Its totient is φ = 213309987840.

The previous prime is 799912687657. The next prime is 799912687681. The reversal of 799912687680 is 86786219997.

It can be written as a sum of positive squares in 2 ways, for example, as 486456031296 + 313456656384 = 697464^2 + 559872^2 .

It is a super-2 number, since 2×799912687680² (a number of 25 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 799912687599 and 799912687608.

It is not an unprimeable number, because it can be changed into a prime (799912687681) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1481211 + ... + 1947770.

Almost surely, 2^799912687680 is an apocalyptic number.

It is an amenable number.

799912687680 is an abundant number, since it is smaller than the sum of its proper divisors (2055969834732).

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

799912687680 is an equidigital number, since it uses as much as digits as its factorization.

799912687680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429016 (or 3428991 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 72.

The spelling of 799912687680 in words is "seven hundred ninety-nine billion, nine hundred twelve million, six hundred eighty-seven thousand, six hundred eighty".