405273799087 has 4 divisors (see below), whose sum is σ = 415158525936. Its totient is φ = 395389072240.

The previous prime is 405273799033. The next prime is 405273799111. The reversal of 405273799087 is 780997372504.

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 405273799087 - 2¹⁵ = 405273766319 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 (405273799187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4942363363 + ... + 4942363444.

It is an arithmetic number, because the mean of its divisors is an integer number (103789631484).

Almost surely, 2^405273799087 is an apocalyptic number.

405273799087 is a deficient number, since it is larger than the sum of its proper divisors (9884726849).

405273799087 is an equidigital number, since it uses as much as digits as its factorization.

405273799087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9884726848.

The product of its (nonzero) digits is 26671680, while the sum is 61.

The spelling of 405273799087 in words is "four hundred five billion, two hundred seventy-three million, seven hundred ninety-nine thousand, eighty-seven".