5266588990581 has 8 divisors (see below), whose sum is σ = 7802354060160. Its totient is φ = 3511059327036.

The previous prime is 5266588990463. The next prime is 5266588990603. The reversal of 5266588990581 is 1850998856625.

5266588990581 is a `hidden beast` number, since 526 + 6 + 5 + 8 + 8 + 9 + 90 + 5 + 8 + 1 = 666.

It is not a de Polignac number, because 5266588990581 - 2¹⁴ = 5266588974197 is a prime.

It is a super-2 number, since 2×5266588990581² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5266588990181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97529425725 + ... + 97529425778.

It is an arithmetic number, because the mean of its divisors is an integer number (975294257520).

Almost surely, 2^{5266588990581} is an apocalyptic number.

It is an amenable number.

5266588990581 is a deficient number, since it is larger than the sum of its proper divisors (2535765069579).

5266588990581 is a wasteful number, since it uses less digits than its factorization.

5266588990581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195058851512 (or 195058851506 counting only the distinct ones).

The product of its (nonzero) digits is 373248000, while the sum is 72.

The spelling of 5266588990581 in words is "five trillion, two hundred sixty-six billion, five hundred eighty-eight million, nine hundred ninety thousand, five hundred eighty-one".