423565213365 has 80 divisors (see below), whose sum is σ = 869764262400. Its totient is φ = 193179997440.

The previous prime is 423565213339. The next prime is 423565213433. The reversal of 423565213365 is 563312565324.

423565213365 is a `hidden beast` number, since 4 + 2 + 3 + 565 + 21 + 3 + 3 + 65 = 666.

It is not a de Polignac number, because 423565213365 - 2¹¹ = 423565211317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 423565213365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1048561 + ... + 1395209.

It is an arithmetic number, because the mean of its divisors is an integer number (10872053280).

Almost surely, 2^423565213365 is an apocalyptic number.

423565213365 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423565213365 is an abundant number, since it is smaller than the sum of its proper divisors (446199049035).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423565213365 is a wasteful number, since it uses less digits than its factorization.

423565213365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347104 (or 347095 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 45.

Adding to 423565213365 its reverse (563312565324), we get a palindrome (986877778689).

The spelling of 423565213365 in words is "four hundred twenty-three billion, five hundred sixty-five million, two hundred thirteen thousand, three hundred sixty-five".