20455533465443 has 8 divisors (see below), whose sum is σ = 21539922309120. Its totient is φ = 19371922803720.

The previous prime is 20455533465439. The next prime is 20455533465449. The reversal of 20455533465443 is 34456433555402.

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 20455533465443 - 2² = 20455533465439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20455533465449) 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, 194491523 + ... + 194596668.

It is an arithmetic number, because the mean of its divisors is an integer number (2692490288640).

Almost surely, 2^{20455533465443} is an apocalyptic number.

20455533465443 is a deficient number, since it is larger than the sum of its proper divisors (1084388843677).

20455533465443 is a wasteful number, since it uses less digits than its factorization.

20455533465443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389090977.

The product of its (nonzero) digits is 51840000, while the sum is 53.

The spelling of 20455533465443 in words is "twenty trillion, four hundred fifty-five billion, five hundred thirty-three million, four hundred sixty-five thousand, four hundred forty-three".