68745360321 has 72 divisors (see below), whose sum is σ = 115402364064. Its totient is φ = 39099957120.

The previous prime is 68745360269. The next prime is 68745360329. The reversal of 68745360321 is 12306354786.

68745360321 is a `hidden beast` number, since 6 + 87 + 4 + 536 + 0 + 32 + 1 = 666.

It is not a de Polignac number, because 68745360321 - 2⁷ = 68745360193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68745360329) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3815085 + ... + 3833061.

It is an arithmetic number, because the mean of its divisors is an integer number (1602810612).

Almost surely, 2^68745360321 is an apocalyptic number.

It is an amenable number.

68745360321 is a deficient number, since it is larger than the sum of its proper divisors (46657003743).

68745360321 is a wasteful number, since it uses less digits than its factorization.

68745360321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18139 (or 18117 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 68745360321 in words is "sixty-eight billion, seven hundred forty-five million, three hundred sixty thousand, three hundred twenty-one".