68497297844 has 6 divisors (see below), whose sum is σ = 119870271234. Its totient is φ = 34248648920.

The previous prime is 68497297831. The next prime is 68497297853. The reversal of 68497297844 is 44879279486.

It can be written as a sum of positive squares in only one way, i.e., 37893294244 + 30604003600 = 194662^2 + 174940^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8562162227 + ... + 8562162234.

It is an arithmetic number, because the mean of its divisors is an integer number (19978378539).

Almost surely, 2^68497297844 is an apocalyptic number.

It is an amenable number.

68497297844 is a deficient number, since it is larger than the sum of its proper divisors (51372973390).

68497297844 is a wasteful number, since it uses less digits than its factorization.

68497297844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17124324465 (or 17124324463 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 68.

The spelling of 68497297844 in words is "sixty-eight billion, four hundred ninety-seven million, two hundred ninety-seven thousand, eight hundred forty-four".