68402512475 has 12 divisors (see below), whose sum is σ = 92529944520. Its totient is φ = 49747281600.

The previous prime is 68402512471. The next prime is 68402512511. The reversal of 68402512475 is 57421520486.

It is not a de Polignac number, because 68402512475 - 2² = 68402512471 is a prime.

It is a super-3 number, since 3×68402512475³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68402512471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124367930 + ... + 124368479.

It is an arithmetic number, because the mean of its divisors is an integer number (7710828710).

Almost surely, 2^68402512475 is an apocalyptic number.

68402512475 is a deficient number, since it is larger than the sum of its proper divisors (24127432045).

68402512475 is a wasteful number, since it uses less digits than its factorization.

68402512475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248736430 (or 248736425 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 68402512475 in words is "sixty-eight billion, four hundred two million, five hundred twelve thousand, four hundred seventy-five".