268609398698 has 4 divisors (see below), whose sum is σ = 402914098050. Its totient is φ = 134304699348.

The previous prime is 268609398689. The next prime is 268609398713. The reversal of 268609398698 is 896893906862.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 169527357169 + 99082041529 = 411737^2 + 314773^2 .

It is a super-2 number, since 2×268609398698² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67152349673 + ... + 67152349676.

Almost surely, 2^268609398698 is an apocalyptic number.

268609398698 is a deficient number, since it is larger than the sum of its proper divisors (134304699352).

268609398698 is a wasteful number, since it uses less digits than its factorization.

268609398698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134304699351.

The product of its (nonzero) digits is 483729408, while the sum is 74.

The spelling of 268609398698 in words is "two hundred sixty-eight billion, six hundred nine million, three hundred ninety-eight thousand, six hundred ninety-eight".