873659573537 has 2 divisors, whose sum is σ = 873659573538. Its totient is φ = 873659573536.

The previous prime is 873659573491. The next prime is 873659573581. The reversal of 873659573537 is 735375956378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 825488542096 + 48171031441 = 908564^2 + 219479^2 .

It is a cyclic number.

It is not a de Polignac number, because 873659573537 - 2³⁰ = 872585831713 is a prime.

It is not a weakly prime, because it can be changed into another prime (873659573587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436829786768 + 436829786769.

It is an arithmetic number, because the mean of its divisors is an integer number (436829786769).

Almost surely, 2^873659573537 is an apocalyptic number.

It is an amenable number.

873659573537 is a deficient number, since it is larger than the sum of its proper divisors (1).

873659573537 is an equidigital number, since it uses as much as digits as its factorization.

873659573537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500094000, while the sum is 68.

The spelling of 873659573537 in words is "eight hundred seventy-three billion, six hundred fifty-nine million, five hundred seventy-three thousand, five hundred thirty-seven".