835544074561 has 27 divisors (see below), whose sum is σ = 987189321699. Its totient is φ = 705129396048.

The previous prime is 835544074489. The next prime is 835544074571. The reversal of 835544074561 is 165470445538.

The square root of 835544074561 is 914081.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 672860918961 + 162683155600 = 820281^2 + 403340^2 .

It is not a de Polignac number, because 835544074561 - 2⁷ = 835544074433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 835544074499 and 835544074508.

It is not an unprimeable number, because it can be changed into a prime (835544074571) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 428703015 + ... + 428704963.

Almost surely, 2^835544074561 is an apocalyptic number.

835544074561 is the 914081-st square number.

835544074561 is the 457041-st centered octagonal number.

It is an amenable number.

835544074561 is a deficient number, since it is larger than the sum of its proper divisors (151645247138).

835544074561 is an frugal number, since it uses more digits than its factorization.

835544074561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046 (or 2023 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 52.

The spelling of 835544074561 in words is "eight hundred thirty-five billion, five hundred forty-four million, seventy-four thousand, five hundred sixty-one".