405540452021322 has 16 divisors (see below), whose sum is σ = 811081250885952. Its totient is φ = 135180092866560.

The previous prime is 405540452021297. The next prime is 405540452021351. The reversal of 405540452021322 is 223120254045504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2229322 + ... + 28566602.

It is an arithmetic number, because the mean of its divisors is an integer number (50692578180372).

Almost surely, 2^{405540452021322} is an apocalyptic number.

405540452021322 is an abundant number, since it is smaller than the sum of its proper divisors (405540798864630).

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

405540452021322 is a wasteful number, since it uses less digits than its factorization.

405540452021322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28903613.

The product of its (nonzero) digits is 384000, while the sum is 39.

The spelling of 405540452021322 in words is "four hundred five trillion, five hundred forty billion, four hundred fifty-two million, twenty-one thousand, three hundred twenty-two".