20540364253123 has 8 divisors (see below), whose sum is σ = 24131337024816. Its totient is φ = 17236669303200.

The previous prime is 20540364253117. The next prime is 20540364253127. The reversal of 20540364253123 is 32135246304502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20540364253123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20540364253127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71819455288 + ... + 71819455573.

It is an arithmetic number, because the mean of its divisors is an integer number (3016417128102).

Almost surely, 2^{20540364253123} is an apocalyptic number.

20540364253123 is a deficient number, since it is larger than the sum of its proper divisors (3590972771693).

20540364253123 is a wasteful number, since it uses less digits than its factorization.

20540364253123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143638910885.

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 20540364253123 in words is "twenty trillion, five hundred forty billion, three hundred sixty-four million, two hundred fifty-three thousand, one hundred twenty-three".