20540522343 has 24 divisors (see below), whose sum is σ = 30139210864. Its totient is φ = 12434019840.

The previous prime is 20540522297. The next prime is 20540522351. The reversal of 20540522343 is 34322504502.

It is not a de Polignac number, because 20540522343 - 2⁶ = 20540522279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20540522343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540524343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276471 + ... + 342807.

Almost surely, 2^20540522343 is an apocalyptic number.

20540522343 is a deficient number, since it is larger than the sum of its proper divisors (9598688521).

20540522343 is a wasteful number, since it uses less digits than its factorization.

20540522343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67215 (or 67204 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The spelling of 20540522343 in words is "twenty billion, five hundred forty million, five hundred twenty-two thousand, three hundred forty-three".