68719458853 has 8 divisors (see below), whose sum is σ = 73024462872. Its totient is φ = 64443641856.

The previous prime is 68719458749. The next prime is 68719458889. The reversal of 68719458853 is 35885491786.

It can be written as a sum of positive squares in 4 ways, for example, as 12843008929 + 55876449924 = 113327^2 + 236382^2 .

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-68719458853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68719458053) 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, 7291900 + ... + 7301317.

It is an arithmetic number, because the mean of its divisors is an integer number (9128057859).

Almost surely, 2^68719458853 is an apocalyptic number.

It is an amenable number.

68719458853 is a deficient number, since it is larger than the sum of its proper divisors (4305004019).

68719458853 is a wasteful number, since it uses less digits than its factorization.

68719458853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14593511.

The product of its digits is 58060800, while the sum is 64.

The spelling of 68719458853 in words is "sixty-eight billion, seven hundred nineteen million, four hundred fifty-eight thousand, eight hundred fifty-three".