20834057243 has 8 divisors (see below), whose sum is σ = 22820266080. Its totient is φ = 18932368000.

The previous prime is 20834057227. The next prime is 20834057269. The reversal of 20834057243 is 34275043802.

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

It is a cyclic number.

It is not a de Polignac number, because 20834057243 - 2⁴ = 20834057227 is a prime.

It is a super-2 number, since 2×20834057243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20834057197 and 20834057206.

It is not an unprimeable number, because it can be changed into a prime (20834057203) 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, 21129383 + ... + 21130368.

It is an arithmetic number, because the mean of its divisors is an integer number (2852533260).

Almost surely, 2^20834057243 is an apocalyptic number.

20834057243 is a deficient number, since it is larger than the sum of its proper divisors (1986208837).

20834057243 is a wasteful number, since it uses less digits than its factorization.

20834057243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42259797.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 20834057243 in words is "twenty billion, eight hundred thirty-four million, fifty-seven thousand, two hundred forty-three".