68344705015 has 16 divisors (see below), whose sum is σ = 82285019136. Its totient is φ = 54495050400.

The previous prime is 68344705007. The next prime is 68344705021. The reversal of 68344705015 is 51050744386.

It is not a de Polignac number, because 68344705015 - 2³ = 68344705007 is a prime.

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, 2920210 + ... + 2943520.

It is an arithmetic number, because the mean of its divisors is an integer number (5142813696).

Almost surely, 2^68344705015 is an apocalyptic number.

68344705015 is a deficient number, since it is larger than the sum of its proper divisors (13940314121).

68344705015 is a wasteful number, since it uses less digits than its factorization.

68344705015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25230.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 68344705015 in words is "sixty-eight billion, three hundred forty-four million, seven hundred five thousand, fifteen".