2533660806551 has 48 divisors (see below), whose sum is σ = 3068202110400. Its totient is φ = 2083625736192.

The previous prime is 2533660806437. The next prime is 2533660806571. The reversal of 2533660806551 is 1556080663352.

It is not a de Polignac number, because 2533660806551 - 2³⁴ = 2516480937367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2533660806551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2533660806571) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146963990 + ... + 146981228.

It is an arithmetic number, because the mean of its divisors is an integer number (63920877300).

Almost surely, 2^{2533660806551} is an apocalyptic number.

2533660806551 is a deficient number, since it is larger than the sum of its proper divisors (534541303849).

2533660806551 is a wasteful number, since it uses less digits than its factorization.

2533660806551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17928 (or 17921 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 2533660806551 in words is "two trillion, five hundred thirty-three billion, six hundred sixty million, eight hundred six thousand, five hundred fifty-one".