285616493761 has 3 divisors (see below), whose sum is σ = 285617028193. Its totient is φ = 285615959330.

The previous prime is 285616493731. The next prime is 285616493807. The reversal of 285616493761 is 167394616582.

The square root of 285616493761 is 534431.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 285616493761 - 2²¹ = 285614396609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 285616493696 and 285616493705.

It is not an unprimeable number, because it can be changed into a prime (285616493731) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 267216 + ... + 801646.

Almost surely, 2^285616493761 is an apocalyptic number.

285616493761 is the 534431-st square number.

285616493761 is the 267216-th centered octagonal number.

It is an amenable number.

285616493761 is a deficient number, since it is larger than the sum of its proper divisors (534432).

285616493761 is an frugal number, since it uses more digits than its factorization.

285616493761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068862 (or 534431 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 58.

The spelling of 285616493761 in words is "two hundred eighty-five billion, six hundred sixteen million, four hundred ninety-three thousand, seven hundred sixty-one".