51566543237 has 16 divisors (see below), whose sum is σ = 58724265600. Its totient is φ = 44822131200.

The previous prime is 51566543201. The next prime is 51566543239. The reversal of 51566543237 is 73234566515.

It is not a de Polignac number, because 51566543237 - 2⁸ = 51566542981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51566543191 and 51566543200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51566543239) 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, 597389 + ... + 678237.

It is an arithmetic number, because the mean of its divisors is an integer number (3670266600).

Almost surely, 2^51566543237 is an apocalyptic number.

It is an amenable number.

51566543237 is a deficient number, since it is larger than the sum of its proper divisors (7157722363).

51566543237 is a wasteful number, since it uses less digits than its factorization.

51566543237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83404.

The product of its digits is 2268000, while the sum is 47.

The spelling of 51566543237 in words is "fifty-one billion, five hundred sixty-six million, five hundred forty-three thousand, two hundred thirty-seven".