68724615457 has 8 divisors (see below), whose sum is σ = 71977271040. Its totient is φ = 65494012320.

The previous prime is 68724615451. The next prime is 68724615559. The reversal of 68724615457 is 75451642786.

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

It is a cyclic number.

It is not a de Polignac number, because 68724615457 - 2³⁵ = 34364877089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68724615398 and 68724615407.

It is not an unprimeable number, because it can be changed into a prime (68724615451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5506732 + ... + 5519197.

It is an arithmetic number, because the mean of its divisors is an integer number (8997158880).

Almost surely, 2^68724615457 is an apocalyptic number.

It is an amenable number.

68724615457 is a deficient number, since it is larger than the sum of its proper divisors (3252655583).

68724615457 is a wasteful number, since it uses less digits than its factorization.

68724615457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11026223.

The product of its digits is 11289600, while the sum is 55.

The spelling of 68724615457 in words is "sixty-eight billion, seven hundred twenty-four million, six hundred fifteen thousand, four hundred fifty-seven".