405256223024 has 20 divisors (see below), whose sum is σ = 826509402840. Its totient is φ = 191963473920.

The previous prime is 405256223003. The next prime is 405256223087. The reversal of 405256223024 is 420322652504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666539537 + ... + 666540144.

It is an arithmetic number, because the mean of its divisors is an integer number (41325470142).

Almost surely, 2^405256223024 is an apocalyptic number.

It is an amenable number.

405256223024 is an abundant number, since it is smaller than the sum of its proper divisors (421253179816).

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

405256223024 is a wasteful number, since it uses less digits than its factorization.

405256223024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333079708 (or 1333079702 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 405256223024 its reverse (420322652504), we get a palindrome (825578875528).

The spelling of 405256223024 in words is "four hundred five billion, two hundred fifty-six million, two hundred twenty-three thousand, twenty-four".