68750215613 has 4 divisors (see below), whose sum is σ = 69058512768. Its totient is φ = 68441918460.

The previous prime is 68750215603. The next prime is 68750215663. The reversal of 68750215613 is 31651205786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68750215613 - 2⁶ = 68750215549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68750215603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154148243 + ... + 154148688.

It is an arithmetic number, because the mean of its divisors is an integer number (17264628192).

Almost surely, 2^68750215613 is an apocalyptic number.

It is an amenable number.

68750215613 is a deficient number, since it is larger than the sum of its proper divisors (308297155).

68750215613 is a wasteful number, since it uses less digits than its factorization.

68750215613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308297154.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 68750215613 in words is "sixty-eight billion, seven hundred fifty million, two hundred fifteen thousand, six hundred thirteen".