405320521045 has 8 divisors (see below), whose sum is σ = 530601409440. Its totient is φ = 294778560720.

The previous prime is 405320521037. The next prime is 405320521069. The reversal of 405320521045 is 540125023504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405320521045 - 2³ = 405320521037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405320520998 and 405320521016.

It is a congruent number.

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, 3684731955 + ... + 3684732064.

It is an arithmetic number, because the mean of its divisors is an integer number (66325176180).

Almost surely, 2^405320521045 is an apocalyptic number.

It is an amenable number.

405320521045 is a deficient number, since it is larger than the sum of its proper divisors (125280888395).

405320521045 is a wasteful number, since it uses less digits than its factorization.

405320521045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7369464035.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 405320521045 its reverse (540125023504), we get a palindrome (945445544549).

The spelling of 405320521045 in words is "four hundred five billion, three hundred twenty million, five hundred twenty-one thousand, forty-five".