20404870343 has 8 divisors (see below), whose sum is σ = 23972155536. Its totient is φ = 17122968000.

The previous prime is 20404870333. The next prime is 20404870441. The reversal of 20404870343 is 34307840402.

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 20404870343 - 2¹² = 20404866247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404870303) 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, 71345558 + ... + 71345843.

It is an arithmetic number, because the mean of its divisors is an integer number (2996519442).

Almost surely, 2^20404870343 is an apocalyptic number.

20404870343 is a deficient number, since it is larger than the sum of its proper divisors (3567285193).

20404870343 is a wasteful number, since it uses less digits than its factorization.

20404870343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142691425.

The product of its (nonzero) digits is 64512, while the sum is 35.

The spelling of 20404870343 in words is "twenty billion, four hundred four million, eight hundred seventy thousand, three hundred forty-three".