20324065537 has 4 divisors (see below), whose sum is σ = 20372572080. Its totient is φ = 20275558996.

The previous prime is 20324065513. The next prime is 20324065547. The reversal of 20324065537 is 73556042302.

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 20324065537 - 2⁷ = 20324065409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20324065496 and 20324065505.

It is not an unprimeable number, because it can be changed into a prime (20324065507) 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, 24252643 + ... + 24253480.

It is an arithmetic number, because the mean of its divisors is an integer number (5093143020).

Almost surely, 2^20324065537 is an apocalyptic number.

It is an amenable number.

20324065537 is a deficient number, since it is larger than the sum of its proper divisors (48506543).

20324065537 is an equidigital number, since it uses as much as digits as its factorization.

20324065537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48506542.

The product of its (nonzero) digits is 151200, while the sum is 37.

The spelling of 20324065537 in words is "twenty billion, three hundred twenty-four million, sixty-five thousand, five hundred thirty-seven".