68288400015 has 16 divisors (see below), whose sum is σ = 119194298496. Its totient is φ = 33109527200.

The previous prime is 68288400001. The next prime is 68288400029. The reversal of 68288400015 is 51000488286.

It is an interprime number because it is at equal distance from previous prime (68288400001) and next prime (68288400029).

It is not a de Polignac number, because 68288400015 - 2¹⁶ = 68288334479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68288400015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206934381 + ... + 206934710.

It is an arithmetic number, because the mean of its divisors is an integer number (7449643656).

Almost surely, 2^68288400015 is an apocalyptic number.

68288400015 is a deficient number, since it is larger than the sum of its proper divisors (50905898481).

68288400015 is a wasteful number, since it uses less digits than its factorization.

68288400015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413869110.

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 68288400015 in words is "sixty-eight billion, two hundred eighty-eight million, four hundred thousand, fifteen".