51566233405 has 16 divisors (see below), whose sum is σ = 62597188800. Its totient is φ = 40776236032.

The previous prime is 51566233403. The next prime is 51566233457. The reversal of 51566233405 is 50433266515.

It is a cyclic number.

It is not a de Polignac number, because 51566233405 - 2¹ = 51566233403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51566233403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132882 + ... + 347548.

It is an arithmetic number, because the mean of its divisors is an integer number (3912324300).

Almost surely, 2^51566233405 is an apocalyptic number.

It is an amenable number.

51566233405 is a deficient number, since it is larger than the sum of its proper divisors (11030955395).

51566233405 is a wasteful number, since it uses less digits than its factorization.

51566233405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215228.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 51566233405 in words is "fifty-one billion, five hundred sixty-six million, two hundred thirty-three thousand, four hundred five".