20354464400443 has 8 divisors (see below), whose sum is σ = 20404708685600. Its totient is φ = 20304222447168.

The previous prime is 20354464400429. The next prime is 20354464400477. The reversal of 20354464400443 is 34400446445302.

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 20354464400443 - 2⁵ = 20354464400411 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 20354464400443.

It is not an unprimeable number, because it can be changed into a prime (20354464460443) 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, 17594530 + ... + 18715672.

It is an arithmetic number, because the mean of its divisors is an integer number (2550588585700).

Almost surely, 2^{20354464400443} is an apocalyptic number.

20354464400443 is a deficient number, since it is larger than the sum of its proper divisors (50244285157).

20354464400443 is a wasteful number, since it uses less digits than its factorization.

20354464400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165941.

The product of its (nonzero) digits is 2211840, while the sum is 43.

The spelling of 20354464400443 in words is "twenty trillion, three hundred fifty-four billion, four hundred sixty-four million, four hundred thousand, four hundred forty-three".