874611585116509 has 2 divisors, whose sum is σ = 874611585116510. Its totient is φ = 874611585116508.

The previous prime is 874611585116461. The next prime is 874611585116539. The reversal of 874611585116509 is 905611585116478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 849811234916484 + 24800350200025 = 29151522^2 + 4979995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-874611585116509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (874611585116539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437305792558254 + 437305792558255.

It is an arithmetic number, because the mean of its divisors is an integer number (437305792558255).

Almost surely, 2^{874611585116509} is an apocalyptic number.

It is an amenable number.

874611585116509 is a deficient number, since it is larger than the sum of its proper divisors (1).

874611585116509 is an equidigital number, since it uses as much as digits as its factorization.

874611585116509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576000, while the sum is 67.

The spelling of 874611585116509 in words is "eight hundred seventy-four trillion, six hundred eleven billion, five hundred eighty-five million, one hundred sixteen thousand, five hundred nine".