68424472643 has 16 divisors (see below), whose sum is σ = 74822747904. Its totient is φ = 62291911680.

The previous prime is 68424472601. The next prime is 68424472663. The reversal of 68424472643 is 34627442486.

It is a cyclic number.

It is not a de Polignac number, because 68424472643 - 2⁶ = 68424472579 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 68424472591 and 68424472600.

It is not an unprimeable number, because it can be changed into a prime (68424472663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1095821 + ... + 1156577.

It is an arithmetic number, because the mean of its divisors is an integer number (4676421744).

Almost surely, 2^68424472643 is an apocalyptic number.

68424472643 is a deficient number, since it is larger than the sum of its proper divisors (6398275261).

68424472643 is a wasteful number, since it uses less digits than its factorization.

68424472643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62942.

The product of its digits is 6193152, while the sum is 50.

The spelling of 68424472643 in words is "sixty-eight billion, four hundred twenty-four million, four hundred seventy-two thousand, six hundred forty-three".