68102112461 has 4 divisors (see below), whose sum is σ = 68206404252. Its totient is φ = 67997820672.

The previous prime is 68102112443. The next prime is 68102112511. The reversal of 68102112461 is 16421120186.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8239192900 + 59862919561 = 90770^2 + 244669^2 .

It is a cyclic number.

It is not a de Polignac number, because 68102112461 - 2³⁴ = 50922243277 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 (68102112061) 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, 52144916 + ... + 52146221.

It is an arithmetic number, because the mean of its divisors is an integer number (17051601063).

Almost surely, 2^68102112461 is an apocalyptic number.

It is an amenable number.

68102112461 is a deficient number, since it is larger than the sum of its proper divisors (104291791).

68102112461 is a wasteful number, since it uses less digits than its factorization.

68102112461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104291790.

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 68102112461 in words is "sixty-eight billion, one hundred two million, one hundred twelve thousand, four hundred sixty-one".