401405001544 has 16 divisors (see below), whose sum is σ = 752662955520. Its totient is φ = 200694880080.

The previous prime is 401405001433. The next prime is 401405001553. The reversal of 401405001544 is 445100504104.

It is a super-2 number, since 2×401405001544² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725544 + ... + 1152919.

It is an arithmetic number, because the mean of its divisors is an integer number (47041434720).

Almost surely, 2^401405001544 is an apocalyptic number.

It is an amenable number.

401405001544 is a deficient number, since it is larger than the sum of its proper divisors (351257953976).

401405001544 is a wasteful number, since it uses less digits than its factorization.

401405001544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905180 (or 1905176 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 401405001544 its reverse (445100504104), we get a palindrome (846505505648).

The spelling of 401405001544 in words is "four hundred one billion, four hundred five million, one thousand, five hundred forty-four".