68247686515 has 16 divisors (see below), whose sum is σ = 86739456960. Its totient is φ = 51371827200.

The previous prime is 68247686501. The next prime is 68247686527. The reversal of 68247686515 is 51568674286.

It is a happy number.

It is not a de Polignac number, because 68247686515 - 2⁵ = 68247686483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68247686515.

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, 189715 + ... + 415315.

It is an arithmetic number, because the mean of its divisors is an integer number (5421216060).

Almost surely, 2^68247686515 is an apocalyptic number.

68247686515 is a deficient number, since it is larger than the sum of its proper divisors (18491770445).

68247686515 is a wasteful number, since it uses less digits than its factorization.

68247686515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229182.

The product of its digits is 19353600, while the sum is 58.

The spelling of 68247686515 in words is "sixty-eight billion, two hundred forty-seven million, six hundred eighty-six thousand, five hundred fifteen".