68672997873 has 12 divisors (see below), whose sum is σ = 101065922100. Its totient is φ = 44918186976.

The previous prime is 68672997859. The next prime is 68672997881. The reversal of 68672997873 is 37879927686.

It can be written as a sum of positive squares in 2 ways, for example, as 30465258849 + 38207739024 = 174543^2 + 195468^2 .

It is not a de Polignac number, because 68672997873 - 2⁴ = 68672997857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68672997893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71983798 + ... + 71984751.

It is an arithmetic number, because the mean of its divisors is an integer number (8422160175).

Almost surely, 2^68672997873 is an apocalyptic number.

It is an amenable number.

68672997873 is a deficient number, since it is larger than the sum of its proper divisors (32392924227).

68672997873 is a wasteful number, since it uses less digits than its factorization.

68672997873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143968608 (or 143968605 counting only the distinct ones).

The product of its digits is 384072192, while the sum is 72.

The spelling of 68672997873 in words is "sixty-eight billion, six hundred seventy-two million, nine hundred ninety-seven thousand, eight hundred seventy-three".