68769506515 has 16 divisors (see below), whose sum is σ = 84394506240. Its totient is φ = 53780744160.

The previous prime is 68769506467. The next prime is 68769506551. The reversal of 68769506515 is 51560596786.

It is a de Polignac number, because none of the positive numbers 2^k-68769506515 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68769506515.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 739635 + ... + 827404.

It is an arithmetic number, because the mean of its divisors is an integer number (5274656640).

Almost surely, 2^68769506515 is an apocalyptic number.

68769506515 is a deficient number, since it is larger than the sum of its proper divisors (15624999725).

68769506515 is a wasteful number, since it uses less digits than its factorization.

68769506515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567242.

The product of its (nonzero) digits is 13608000, while the sum is 58.

The spelling of 68769506515 in words is "sixty-eight billion, seven hundred sixty-nine million, five hundred six thousand, five hundred fifteen".