68645132054331 has 32 divisors (see below), whose sum is σ = 104712626703360. Its totient is φ = 39184349871744.

The previous prime is 68645132054299. The next prime is 68645132054333. The reversal of 68645132054331 is 13345023154686.

It is not a de Polignac number, because 68645132054331 - 2⁵ = 68645132054299 is a prime.

It is a super-2 number, since 2×68645132054331² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68645132054333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329478450 + ... + 329686728.

It is an arithmetic number, because the mean of its divisors is an integer number (3272269584480).

Almost surely, 2^{68645132054331} is an apocalyptic number.

68645132054331 is a deficient number, since it is larger than the sum of its proper divisors (36067494649029).

68645132054331 is a wasteful number, since it uses less digits than its factorization.

68645132054331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224795.

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 68645132054331 in words is "sixty-eight trillion, six hundred forty-five billion, one hundred thirty-two million, fifty-four thousand, three hundred thirty-one".