814450687561 has 8 divisors (see below), whose sum is σ = 931862139200. Its totient is φ = 697304574288.

The previous prime is 814450687549. The next prime is 814450687607. The reversal of 814450687561 is 165786054418.

814450687561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 814450687561 - 2⁹ = 814450687049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814450682561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66328011 + ... + 66340288.

It is an arithmetic number, because the mean of its divisors is an integer number (116482767400).

Almost surely, 2^814450687561 is an apocalyptic number.

It is an amenable number.

814450687561 is a deficient number, since it is larger than the sum of its proper divisors (117411451639).

814450687561 is a wasteful number, since it uses less digits than its factorization.

814450687561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132669183.

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 814450687561 in words is "eight hundred fourteen billion, four hundred fifty million, six hundred eighty-seven thousand, five hundred sixty-one".