2816325032481 has 9 divisors (see below), whose sum is σ = 4068032319091. Its totient is φ = 1877546665272.

The previous prime is 2816325032473. The next prime is 2816325032539. The reversal of 2816325032481 is 1842305236182.

The square root of 2816325032481 is 1678191.

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

2816325032481 is a `hidden beast` number, since 2 + 8 + 1 + 63 + 2 + 503 + 2 + 4 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2026565780625 + 789759251856 = 1423575^2 + 888684^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2816325032481 - 2³ = 2816325032473 is a prime.

It is a super-2 number, since 2×2816325032481² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2816325032461) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4754875 + ... + 5314271.

Almost surely, 2^{2816325032481} is an apocalyptic number.

2816325032481 is the 1678191-st square number.

2816325032481 is the 839096-th centered octagonal number.

It is an amenable number.

2816325032481 is a deficient number, since it is larger than the sum of its proper divisors (1251707286610).

2816325032481 is an frugal number, since it uses more digits than its factorization.

2816325032481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118800 (or 559400 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 2816325032481 in words is "two trillion, eight hundred sixteen billion, three hundred twenty-five million, thirty-two thousand, four hundred eighty-one".