20540364252599 has 2 divisors, whose sum is σ = 20540364252600. Its totient is φ = 20540364252598.

The previous prime is 20540364252539. The next prime is 20540364252673. The reversal of 20540364252599 is 99525246304502.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20540364252599 is a prime.

It is a super-3 number, since 3×20540364252599³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20540364252539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270182126299 + 10270182126300.

It is an arithmetic number, because the mean of its divisors is an integer number (10270182126300).

Almost surely, 2^{20540364252599} is an apocalyptic number.

20540364252599 is a deficient number, since it is larger than the sum of its proper divisors (1).

20540364252599 is an equidigital number, since it uses as much as digits as its factorization.

20540364252599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328000, while the sum is 56.

The spelling of 20540364252599 in words is "twenty trillion, five hundred forty billion, three hundred sixty-four million, two hundred fifty-two thousand, five hundred ninety-nine".