68561650685 has 32 divisors (see below), whose sum is σ = 90638020224. Its totient is φ = 49373440000.

The previous prime is 68561650667. The next prime is 68561650693. The reversal of 68561650685 is 58605616586.

It is not a de Polignac number, because 68561650685 - 2¹⁰ = 68561649661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68561650685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3010190 + ... + 3032880.

It is an arithmetic number, because the mean of its divisors is an integer number (2832438132).

Almost surely, 2^68561650685 is an apocalyptic number.

It is an amenable number.

68561650685 is a deficient number, since it is larger than the sum of its proper divisors (22076369539).

68561650685 is a wasteful number, since it uses less digits than its factorization.

68561650685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23245.

The product of its (nonzero) digits is 10368000, while the sum is 56.

The spelling of 68561650685 in words is "sixty-eight billion, five hundred sixty-one million, six hundred fifty thousand, six hundred eighty-five".