20540364253063 has 4 divisors (see below), whose sum is σ = 20552468181840. Its totient is φ = 20528260324288.

The previous prime is 20540364253049. The next prime is 20540364253103. The reversal of 20540364253063 is 36035246304502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20540364253063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540364253043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6051961843 + ... + 6051965236.

It is an arithmetic number, because the mean of its divisors is an integer number (5138117045460).

Almost surely, 2^{20540364253063} is an apocalyptic number.

20540364253063 is a deficient number, since it is larger than the sum of its proper divisors (12103928777).

20540364253063 is a wasteful number, since it uses less digits than its factorization.

20540364253063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103928776.

The product of its (nonzero) digits is 1555200, while the sum is 43.

The spelling of 20540364253063 in words is "twenty trillion, five hundred forty billion, three hundred sixty-four million, two hundred fifty-three thousand, sixty-three".