405388641327 has 32 divisors (see below), whose sum is σ = 555382656000. Its totient is φ = 262898469888.

The previous prime is 405388641319. The next prime is 405388641403. The reversal of 405388641327 is 723146883504.

It is a happy number.

It is not a de Polignac number, because 405388641327 - 2³ = 405388641319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405388641327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405388621327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87046983 + ... + 87051639.

It is an arithmetic number, because the mean of its divisors is an integer number (17355708000).

Almost surely, 2^405388641327 is an apocalyptic number.

405388641327 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

405388641327 is a deficient number, since it is larger than the sum of its proper divisors (149994014673).

405388641327 is a wasteful number, since it uses less digits than its factorization.

405388641327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335.

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 405388641327 in words is "four hundred five billion, three hundred eighty-eight million, six hundred forty-one thousand, three hundred twenty-seven".