68752457487857 has 16 divisors (see below), whose sum is σ = 83557363337280. Its totient is φ = 55704908884800.

The previous prime is 68752457487853. The next prime is 68752457487887. The reversal of 68752457487857 is 75878475425786.

It is a cyclic number.

It is not a de Polignac number, because 68752457487857 - 2² = 68752457487853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68752457487851) 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, 8289416819 + ... + 8289425112.

It is an arithmetic number, because the mean of its divisors is an integer number (5222335208580).

Almost surely, 2^{68752457487857} is an apocalyptic number.

It is an amenable number.

68752457487857 is a deficient number, since it is larger than the sum of its proper divisors (14804905849423).

68752457487857 is a wasteful number, since it uses less digits than its factorization.

68752457487857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16578841984.

The product of its digits is 29503488000, while the sum is 83.

The spelling of 68752457487857 in words is "sixty-eight trillion, seven hundred fifty-two billion, four hundred fifty-seven million, four hundred eighty-seven thousand, eight hundred fifty-seven".