2668437999 has 10 divisors (see below), whose sum is σ = 3986185280. Its totient is φ = 1778958612.

The previous prime is 2668437991. The next prime is 2668438027. The reversal of 2668437999 is 9997348662.

It is not a de Polignac number, because 2668437999 - 2³ = 2668437991 is a prime.

It is a super-2 number, since 2×2668437999² = 14241122709014248002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668437991) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16471759 + ... + 16471920.

It is an arithmetic number, because the mean of its divisors is an integer number (398618528).

Almost surely, 2^2668437999 is an apocalyptic number.

2668437999 is a deficient number, since it is larger than the sum of its proper divisors (1317747281).

2668437999 is an equidigital number, since it uses as much as digits as its factorization.

2668437999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32943691 (or 32943682 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The square root of 2668437999 is about 51656.9259538351. The cubic root of 2668437999 is about 1387.0295240529.

The spelling of 2668437999 in words is "two billion, six hundred sixty-eight million, four hundred thirty-seven thousand, nine hundred ninety-nine".