2530661552533 has 4 divisors (see below), whose sum is σ = 2573554121280. Its totient is φ = 2487768983788.

The previous prime is 2530661552521. The next prime is 2530661552569. The reversal of 2530661552533 is 3352551660352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2530661552533 - 2²¹ = 2530659455381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530661552513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21446284285 + ... + 21446284402.

It is an arithmetic number, because the mean of its divisors is an integer number (643388530320).

Almost surely, 2^{2530661552533} is an apocalyptic number.

It is an amenable number.

2530661552533 is a deficient number, since it is larger than the sum of its proper divisors (42892568747).

2530661552533 is an equidigital number, since it uses as much as digits as its factorization.

2530661552533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42892568746.

The product of its (nonzero) digits is 2430000, while the sum is 46.

The spelling of 2530661552533 in words is "two trillion, five hundred thirty billion, six hundred sixty-one million, five hundred fifty-two thousand, five hundred thirty-three".