999795568380 has 96 divisors (see below), whose sum is σ = 3199531345920. Its totient is φ = 228511449600.

The previous prime is 999795568361. The next prime is 999795568381. The reversal of 999795568380 is 83865597999.

It is a junction number, because it is equal to n+sod(n) for n = 999795568296 and 999795568305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999795568381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8425501 + ... + 8543339.

It is an arithmetic number, because the mean of its divisors is an integer number (33328451520).

Almost surely, 2^999795568380 is an apocalyptic number.

It is an amenable number.

999795568380 is an abundant number, since it is smaller than the sum of its proper divisors (2199735777540).

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

999795568380 is a wasteful number, since it uses less digits than its factorization.

999795568380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138059 (or 138057 counting only the distinct ones).

The product of its (nonzero) digits is 1322697600, while the sum is 78.

The spelling of 999795568380 in words is "nine hundred ninety-nine billion, seven hundred ninety-five million, five hundred sixty-eight thousand, three hundred eighty".