2530478065581 has 12 divisors (see below), whose sum is σ = 3661039894720. Its totient is φ = 1684260033480.

The previous prime is 2530478065559. The next prime is 2530478065673. The reversal of 2530478065581 is 1855608740352.

2530478065581 is a `hidden beast` number, since 2 + 5 + 3 + 0 + 4 + 7 + 80 + 6 + 558 + 1 = 666.

It is not a de Polignac number, because 2530478065581 - 2⁹ = 2530478065069 is a prime.

It is a super-2 number, since 2×2530478065581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530478065681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227106085 + ... + 227117226.

Almost surely, 2^{2530478065581} is an apocalyptic number.

It is an amenable number.

2530478065581 is a deficient number, since it is larger than the sum of its proper divisors (1130561829139).

2530478065581 is a wasteful number, since it uses less digits than its factorization.

2530478065581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454223936 (or 454223933 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 2530478065581 in words is "two trillion, five hundred thirty billion, four hundred seventy-eight million, sixty-five thousand, five hundred eighty-one".