20543343469 has 32 divisors (see below), whose sum is σ = 23417856000. Its totient is φ = 17852529600.

The previous prime is 20543343451. The next prime is 20543343479. The reversal of 20543343469 is 96434334502.

It is a cyclic number.

It is not a de Polignac number, because 20543343469 - 2¹¹ = 20543341421 is a prime.

It is a super-2 number, since 2×20543343469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20543343479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16316562 + ... + 16317820.

It is an arithmetic number, because the mean of its divisors is an integer number (731808000).

Almost surely, 2^20543343469 is an apocalyptic number.

It is an amenable number.

20543343469 is a deficient number, since it is larger than the sum of its proper divisors (2874512531).

20543343469 is a wasteful number, since it uses less digits than its factorization.

20543343469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 20543343469 in words is "twenty billion, five hundred forty-three million, three hundred forty-three thousand, four hundred sixty-nine".