405541401320 has 128 divisors (see below), whose sum is σ = 1093367808000. Its totient is φ = 133633716480.

The previous prime is 405541401313. The next prime is 405541401361. The reversal of 405541401320 is 23104145504.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 862280 + ... + 1246839.

It is an arithmetic number, because the mean of its divisors is an integer number (8541936000).

Almost surely, 2^405541401320 is an apocalyptic number.

405541401320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405541401320 is an abundant number, since it is smaller than the sum of its proper divisors (687826406680).

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

405541401320 is a wasteful number, since it uses less digits than its factorization.

405541401320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109183 (or 2109179 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 405541401320 its reverse (23104145504), we get a palindrome (428645546824).

The spelling of 405541401320 in words is "four hundred five billion, five hundred forty-one million, four hundred one thousand, three hundred twenty".