405083272721 has 8 divisors (see below), whose sum is σ = 407433621504. Its totient is φ = 402735314880.

The previous prime is 405083272717. The next prime is 405083272747. The reversal of 405083272721 is 127272380504.

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 405083272721 - 2² = 405083272717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405083272771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257345 + ... + 936158.

It is an arithmetic number, because the mean of its divisors is an integer number (50929202688).

Almost surely, 2^405083272721 is an apocalyptic number.

It is an amenable number.

405083272721 is a deficient number, since it is larger than the sum of its proper divisors (2350348783).

405083272721 is a wasteful number, since it uses less digits than its factorization.

405083272721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195471.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 405083272721 in words is "four hundred five billion, eighty-three million, two hundred seventy-two thousand, seven hundred twenty-one".