68385794060215 has 16 divisors (see below), whose sum is σ = 83188521625248. Its totient is φ = 53958281642496.

The previous prime is 68385794060191. The next prime is 68385794060237. The reversal of 68385794060215 is 51206049758386.

It is a cyclic number.

It is not a de Polignac number, because 68385794060215 - 2⁴⁵ = 33201421971383 is a prime.

It is a super-2 number, since 2×68385794060215² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

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, 20242072 + ... + 23377618.

It is an arithmetic number, because the mean of its divisors is an integer number (5199282601578).

It is a 1-persistent number, because it is pandigital, but 2⋅68385794060215 = 136771588120430 is not.

Almost surely, 2^{68385794060215} is an apocalyptic number.

68385794060215 is a deficient number, since it is larger than the sum of its proper divisors (14802727565033).

68385794060215 is a wasteful number, since it uses less digits than its factorization.

68385794060215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195378.

The product of its (nonzero) digits is 87091200, while the sum is 64.

The spelling of 68385794060215 in words is "sixty-eight trillion, three hundred eighty-five billion, seven hundred ninety-four million, sixty thousand, two hundred fifteen".