20090688343 has 4 divisors (see below), whose sum is σ = 21917114568. Its totient is φ = 18264262120.

The previous prime is 20090688337. The next prime is 20090688377. The reversal of 20090688343 is 34388609002.

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

It is a cyclic number.

It is not a de Polignac number, because 20090688343 - 2²⁹ = 19553817431 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 20090688343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20090688743) 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, 913213096 + ... + 913213117.

It is an arithmetic number, because the mean of its divisors is an integer number (5479278642).

Almost surely, 2^20090688343 is an apocalyptic number.

20090688343 is a deficient number, since it is larger than the sum of its proper divisors (1826426225).

20090688343 is a wasteful number, since it uses less digits than its factorization.

20090688343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826426224.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 20090688343 in words is "twenty billion, ninety million, six hundred eighty-eight thousand, three hundred forty-three".