401405388805 has 8 divisors (see below), whose sum is σ = 481723117344. Its totient is φ = 321099877200.

The previous prime is 401405388757. The next prime is 401405388827. The reversal of 401405388805 is 508883504104.

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

It is not a de Polignac number, because 401405388805 - 2¹³ = 401405380613 is a prime.

It is a super-2 number, since 2×401405388805² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

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, 2981791 + ... + 3113500.

It is an arithmetic number, because the mean of its divisors is an integer number (60215389668).

Almost surely, 2^401405388805 is an apocalyptic number.

It is an amenable number.

401405388805 is a deficient number, since it is larger than the sum of its proper divisors (80317728539).

401405388805 is a wasteful number, since it uses less digits than its factorization.

401405388805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108467.

The product of its (nonzero) digits is 614400, while the sum is 46.

The spelling of 401405388805 in words is "four hundred one billion, four hundred five million, three hundred eighty-eight thousand, eight hundred five".