20437506057763 has 2 divisors, whose sum is σ = 20437506057764. Its totient is φ = 20437506057762.

The previous prime is 20437506057743. The next prime is 20437506057797. The reversal of 20437506057763 is 36775060573402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20437506057763 is a prime.

It is a super-2 number, since 2×20437506057763² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20437506057743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10218753028881 + 10218753028882.

It is an arithmetic number, because the mean of its divisors is an integer number (10218753028882).

Almost surely, 2^{20437506057763} is an apocalyptic number.

20437506057763 is a deficient number, since it is larger than the sum of its proper divisors (1).

20437506057763 is an equidigital number, since it uses as much as digits as its factorization.

20437506057763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22226400, while the sum is 55.

The spelling of 20437506057763 in words is "twenty trillion, four hundred thirty-seven billion, five hundred six million, fifty-seven thousand, seven hundred sixty-three".