68808990275 has 24 divisors (see below), whose sum is σ = 85740940800. Its totient is φ = 54777984800.

The previous prime is 68808990259. The next prime is 68808990277. The reversal of 68808990275 is 57209980886.

It is not a de Polignac number, because 68808990275 - 2⁴ = 68808990259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68808990277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10817546 + ... + 10823904.

It is an arithmetic number, because the mean of its divisors is an integer number (3572539200).

Almost surely, 2^68808990275 is an apocalyptic number.

68808990275 is a deficient number, since it is larger than the sum of its proper divisors (16931950525).

68808990275 is a wasteful number, since it uses less digits than its factorization.

68808990275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8419 (or 8414 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 68808990275 in words is "sixty-eight billion, eight hundred eight million, nine hundred ninety thousand, two hundred seventy-five".