268839963499 has 4 divisors (see below), whose sum is σ = 271450060336. Its totient is φ = 266229866664.

The previous prime is 268839963487. The next prime is 268839963533. The reversal of 268839963499 is 994369938862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 994369938862 = 2 ⋅497184969431.

It is a cyclic number.

It is not a de Polignac number, because 268839963499 - 2¹⁷ = 268839832427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268839963419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1305048264 + ... + 1305048469.

It is an arithmetic number, because the mean of its divisors is an integer number (67862515084).

Almost surely, 2^268839963499 is an apocalyptic number.

268839963499 is a deficient number, since it is larger than the sum of its proper divisors (2610096837).

268839963499 is a wasteful number, since it uses less digits than its factorization.

268839963499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610096836.

The product of its digits is 1088391168, while the sum is 76.

The spelling of 268839963499 in words is "two hundred sixty-eight billion, eight hundred thirty-nine million, nine hundred sixty-three thousand, four hundred ninety-nine".