20582605551 has 64 divisors (see below), whose sum is σ = 31726080000. Its totient is φ = 11781568512.

The previous prime is 20582605471. The next prime is 20582605553. The reversal of 20582605551 is 15550628502.

It is not a de Polignac number, because 20582605551 - 2¹³ = 20582597359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20582605553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14302690 + ... + 14304128.

It is an arithmetic number, because the mean of its divisors is an integer number (495720000).

Almost surely, 2^20582605551 is an apocalyptic number.

20582605551 is a deficient number, since it is larger than the sum of its proper divisors (11143474449).

20582605551 is a wasteful number, since it uses less digits than its factorization.

20582605551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016.

The product of its (nonzero) digits is 120000, while the sum is 39.

The spelling of 20582605551 in words is "twenty billion, five hundred eighty-two million, six hundred five thousand, five hundred fifty-one".