405463316721 has 16 divisors (see below), whose sum is σ = 546277053504. Its totient is φ = 267480105984.

The previous prime is 405463316689. The next prime is 405463316723. The reversal of 405463316721 is 127613364504.

It is not a de Polignac number, because 405463316721 - 2⁵ = 405463316689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405463316723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1800610 + ... + 2013236.

It is an arithmetic number, because the mean of its divisors is an integer number (34142315844).

Almost surely, 2^405463316721 is an apocalyptic number.

It is an amenable number.

405463316721 is a deficient number, since it is larger than the sum of its proper divisors (140813736783).

405463316721 is a wasteful number, since it uses less digits than its factorization.

405463316721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219280.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 405463316721 in words is "four hundred five billion, four hundred sixty-three million, three hundred sixteen thousand, seven hundred twenty-one".