139267535873 has 2 divisors, whose sum is σ = 139267535874. Its totient is φ = 139267535872.

The previous prime is 139267535863. The next prime is 139267535923. The reversal of 139267535873 is 378535762931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138955236289 + 312299584 = 372767^2 + 17672^2 .

It is a cyclic number.

It is not a de Polignac number, because 139267535873 - 2³⁰ = 138193794049 is a prime.

It is not a weakly prime, because it can be changed into another prime (139267535863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69633767936 + 69633767937.

It is an arithmetic number, because the mean of its divisors is an integer number (69633767937).

Almost surely, 2^139267535873 is an apocalyptic number.

It is an amenable number.

139267535873 is a deficient number, since it is larger than the sum of its proper divisors (1).

139267535873 is an equidigital number, since it uses as much as digits as its factorization.

139267535873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28576800, while the sum is 59.

The spelling of 139267535873 in words is "one hundred thirty-nine billion, two hundred sixty-seven million, five hundred thirty-five thousand, eight hundred seventy-three".