20465032537 has 2 divisors, whose sum is σ = 20465032538. Its totient is φ = 20465032536.

The previous prime is 20465032501. The next prime is 20465032543. The reversal of 20465032537 is 73523056402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10565578521 + 9899454016 = 102789^2 + 99496^2 .

It is a cyclic number.

It is not a de Polignac number, because 20465032537 - 2¹⁹ = 20464508249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20465032496 and 20465032505.

It is not a weakly prime, because it can be changed into another prime (20465032597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10232516268 + 10232516269.

It is an arithmetic number, because the mean of its divisors is an integer number (10232516269).

Almost surely, 2^20465032537 is an apocalyptic number.

It is an amenable number.

20465032537 is a deficient number, since it is larger than the sum of its proper divisors (1).

20465032537 is an equidigital number, since it uses as much as digits as its factorization.

20465032537 is an evil number, because the sum of its binary digits is even.

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

Adding to 20465032537 its reverse (73523056402), we get a palindrome (93988088939).

The spelling of 20465032537 in words is "twenty billion, four hundred sixty-five million, thirty-two thousand, five hundred thirty-seven".