68357119861 has 4 divisors (see below), whose sum is σ = 68358956224. Its totient is φ = 68355283500.

The previous prime is 68357119849. The next prime is 68357119871. The reversal of 68357119861 is 16891175386.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-68357119861 is a prime.

It is a super-2 number, since 2×68357119861² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68357119871) 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, 861165 + ... + 937186.

It is an arithmetic number, because the mean of its divisors is an integer number (17089739056).

Almost surely, 2^68357119861 is an apocalyptic number.

It is an amenable number.

68357119861 is a deficient number, since it is larger than the sum of its proper divisors (1836363).

68357119861 is a wasteful number, since it uses less digits than its factorization.

68357119861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836362.

The product of its digits is 2177280, while the sum is 55.

The spelling of 68357119861 in words is "sixty-eight billion, three hundred fifty-seven million, one hundred nineteen thousand, eight hundred sixty-one".