68390241320143 has 4 divisors (see below), whose sum is σ = 69255940577440. Its totient is φ = 67524542062848.

The previous prime is 68390241320119. The next prime is 68390241320183. The reversal of 68390241320143 is 34102314209386.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68390241320143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68390241320093 and 68390241320102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68390241320183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432849628530 + ... + 432849628687.

It is an arithmetic number, because the mean of its divisors is an integer number (17313985144360).

Almost surely, 2^{68390241320143} is an apocalyptic number.

68390241320143 is a deficient number, since it is larger than the sum of its proper divisors (865699257297).

68390241320143 is an equidigital number, since it uses as much as digits as its factorization.

68390241320143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865699257296.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 68390241320143 in words is "sixty-eight trillion, three hundred ninety billion, two hundred forty-one million, three hundred twenty thousand, one hundred forty-three".