20486537726539 has 2 divisors, whose sum is σ = 20486537726540. Its totient is φ = 20486537726538.

The previous prime is 20486537726537. The next prime is 20486537726597. The reversal of 20486537726539 is 93562773568402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20486537726539 - 2¹ = 20486537726537 is a prime.

It is a super-3 number, since 3×20486537726539³ (a number of 41 digits) contains 333 as substring.

Together with 20486537726537, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20486537726537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10243268863269 + 10243268863270.

It is an arithmetic number, because the mean of its divisors is an integer number (10243268863270).

Almost surely, 2^{20486537726539} is an apocalyptic number.

20486537726539 is a deficient number, since it is larger than the sum of its proper divisors (1).

20486537726539 is an equidigital number, since it uses as much as digits as its factorization.

20486537726539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 457228800, while the sum is 67.

The spelling of 20486537726539 in words is "twenty trillion, four hundred eighty-six billion, five hundred thirty-seven million, seven hundred twenty-six thousand, five hundred thirty-nine".