20024137366081 has 2 divisors, whose sum is σ = 20024137366082. Its totient is φ = 20024137366080.

The previous prime is 20024137366043. The next prime is 20024137366091. The reversal of 20024137366081 is 18066373142002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17366555982400 + 2657581383681 = 4167320^2 + 1630209^2 .

It is a cyclic number.

It is not a de Polignac number, because 20024137366081 - 2²³ = 20024128977473 is a prime.

It is a super-2 number, since 2×20024137366081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20024137366091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012068683040 + 10012068683041.

It is an arithmetic number, because the mean of its divisors is an integer number (10012068683041).

Almost surely, 2^{20024137366081} is an apocalyptic number.

It is an amenable number.

20024137366081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20024137366081 is an equidigital number, since it uses as much as digits as its factorization.

20024137366081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 20024137366081 in words is "twenty trillion, twenty-four billion, one hundred thirty-seven million, three hundred sixty-six thousand, eighty-one".