268618109697 has 24 divisors (see below), whose sum is σ = 443706793920. Its totient is φ = 153401312160.

The previous prime is 268618109689. The next prime is 268618109699. The reversal of 268618109697 is 796901816862.

268618109697 is a `hidden beast` number, since 2 + 6 + 8 + 618 + 1 + 0 + 9 + 6 + 9 + 7 = 666.

It is not a de Polignac number, because 268618109697 - 2³ = 268618109689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (268618109699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1213047 + ... + 1417292.

It is an arithmetic number, because the mean of its divisors is an integer number (18487783080).

Almost surely, 2^268618109697 is an apocalyptic number.

It is an amenable number.

268618109697 is a deficient number, since it is larger than the sum of its proper divisors (175088684223).

268618109697 is a wasteful number, since it uses less digits than its factorization.

268618109697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631973 (or 2631970 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 268618109697 in words is "two hundred sixty-eight billion, six hundred eighteen million, one hundred nine thousand, six hundred ninety-seven".