68121486445 has 32 divisors (see below), whose sum is σ = 85487301504. Its totient is φ = 52064812800.

The previous prime is 68121486421. The next prime is 68121486449. The reversal of 68121486445 is 54468412186.

It is not a de Polignac number, because 68121486445 - 2¹⁵ = 68121453677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68121486449) 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, 3762715 + ... + 3780775.

It is an arithmetic number, because the mean of its divisors is an integer number (2671478172).

Almost surely, 2^68121486445 is an apocalyptic number.

It is an amenable number.

68121486445 is a deficient number, since it is larger than the sum of its proper divisors (17365815059).

68121486445 is a wasteful number, since it uses less digits than its factorization.

68121486445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18493.

The product of its digits is 1474560, while the sum is 49.

The spelling of 68121486445 in words is "sixty-eight billion, one hundred twenty-one million, four hundred eighty-six thousand, four hundred forty-five".