405320521432 has 32 divisors (see below), whose sum is σ = 772890822000. Its totient is φ = 199220227200.

The previous prime is 405320521409. The next prime is 405320521433. The reversal of 405320521432 is 234125023504.

It is a junction number, because it is equal to n+sod(n) for n = 405320521394 and 405320521403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405320521433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584682 + ... + 1073542.

Almost surely, 2^405320521432 is an apocalyptic number.

It is an amenable number.

405320521432 is a deficient number, since it is larger than the sum of its proper divisors (367570300568).

405320521432 is a wasteful number, since it uses less digits than its factorization.

405320521432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490627 (or 490623 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 405320521432 its reverse (234125023504), we get a palindrome (639445544936).

The spelling of 405320521432 in words is "four hundred five billion, three hundred twenty million, five hundred twenty-one thousand, four hundred thirty-two".