406565553323 has 4 divisors (see below), whose sum is σ = 427963740360. Its totient is φ = 385167366288.

The previous prime is 406565553299. The next prime is 406565553337. The reversal of 406565553323 is 323355565604.

It is a happy number.

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 406565553323 - 2¹⁴ = 406565536939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406565553353) 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, 10699093490 + ... + 10699093527.

It is an arithmetic number, because the mean of its divisors is an integer number (106990935090).

Almost surely, 2^406565553323 is an apocalyptic number.

406565553323 is a deficient number, since it is larger than the sum of its proper divisors (21398187037).

406565553323 is a wasteful number, since it uses less digits than its factorization.

406565553323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21398187036.

The product of its (nonzero) digits is 4860000, while the sum is 47.

The spelling of 406565553323 in words is "four hundred six billion, five hundred sixty-five million, five hundred fifty-three thousand, three hundred twenty-three".