2399616164985 has 16 divisors (see below), whose sum is σ = 4134723238464. Its totient is φ = 1181349496512.

The previous prime is 2399616164863. The next prime is 2399616164987. The reversal of 2399616164985 is 5894616169932.

It is not a de Polignac number, because 2399616164985 - 2¹⁶ = 2399616099449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2399616164987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6152861767 + ... + 6152862156.

It is an arithmetic number, because the mean of its divisors is an integer number (258420202404).

Almost surely, 2^{2399616164985} is an apocalyptic number.

It is an amenable number.

2399616164985 is a deficient number, since it is larger than the sum of its proper divisors (1735107073479).

2399616164985 is a wasteful number, since it uses less digits than its factorization.

2399616164985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12305723944.

The product of its digits is 151165440, while the sum is 69.

The spelling of 2399616164985 in words is "two trillion, three hundred ninety-nine billion, six hundred sixteen million, one hundred sixty-four thousand, nine hundred eighty-five".