68424836257 has 8 divisors (see below), whose sum is σ = 69097924800. Its totient is φ = 67752370224.

The previous prime is 68424836197. The next prime is 68424836267. The reversal of 68424836257 is 75263842486.

68424836257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68424836257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68424836198 and 68424836207.

It is not an unprimeable number, because it can be changed into a prime (68424836267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66844 + ... + 375922.

It is an arithmetic number, because the mean of its divisors is an integer number (8637240600).

Almost surely, 2^68424836257 is an apocalyptic number.

It is an amenable number.

68424836257 is a deficient number, since it is larger than the sum of its proper divisors (673088543).

68424836257 is a wasteful number, since it uses less digits than its factorization.

68424836257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311255.

The product of its digits is 15482880, while the sum is 55.

The spelling of 68424836257 in words is "sixty-eight billion, four hundred twenty-four million, eight hundred thirty-six thousand, two hundred fifty-seven".