68607365849 has 4 divisors (see below), whose sum is σ = 74844399120. Its totient is φ = 62370332580.

The previous prime is 68607365843. The next prime is 68607365857. The reversal of 68607365849 is 94856370686.

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-68607365849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68607365791 and 68607365800.

It is not an unprimeable number, because it can be changed into a prime (68607365843) 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, 3118516619 + ... + 3118516640.

It is an arithmetic number, because the mean of its divisors is an integer number (18711099780).

Almost surely, 2^68607365849 is an apocalyptic number.

It is an amenable number.

68607365849 is a deficient number, since it is larger than the sum of its proper divisors (6237033271).

68607365849 is a wasteful number, since it uses less digits than its factorization.

68607365849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6237033270.

The product of its (nonzero) digits is 52254720, while the sum is 62.

The spelling of 68607365849 in words is "sixty-eight billion, six hundred seven million, three hundred sixty-five thousand, eight hundred forty-nine".