20604200237 has 4 divisors (see below), whose sum is σ = 20804241120. Its totient is φ = 20404159356.

The previous prime is 20604200173. The next prime is 20604200257. The reversal of 20604200237 is 73200240602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20604200237 - 2⁶ = 20604200173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20604200257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100020287 + ... + 100020492.

It is an arithmetic number, because the mean of its divisors is an integer number (5201060280).

Almost surely, 2^20604200237 is an apocalyptic number.

It is an amenable number.

20604200237 is a deficient number, since it is larger than the sum of its proper divisors (200040883).

20604200237 is a wasteful number, since it uses less digits than its factorization.

20604200237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200040882.

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 20604200237 its reverse (73200240602), we get a palindrome (93804440839).

The spelling of 20604200237 in words is "twenty billion, six hundred four million, two hundred thousand, two hundred thirty-seven".