20540364235111 has 24 divisors (see below), whose sum is σ = 24890945354880. Its totient is φ = 16881777259200.

The previous prime is 20540364234989. The next prime is 20540364235141. The reversal of 20540364235111 is 11153246304502.

It is not a de Polignac number, because 20540364235111 - 2⁷ = 20540364234983 is a prime.

It is a super-2 number, since 2×20540364235111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540364235141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61863300 + ... + 62194441.

It is an arithmetic number, because the mean of its divisors is an integer number (1037122723120).

Almost surely, 2^{20540364235111} is an apocalyptic number.

20540364235111 is a deficient number, since it is larger than the sum of its proper divisors (4350581119769).

20540364235111 is a wasteful number, since it uses less digits than its factorization.

20540364235111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124057895 (or 124057888 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 20540364235111 in words is "twenty trillion, five hundred forty billion, three hundred sixty-four million, two hundred thirty-five thousand, one hundred eleven".