401111235144 has 32 divisors (see below), whose sum is σ = 1114197876000. Its totient is φ = 133703744976.

The previous prime is 401111235139. The next prime is 401111235157. The reversal of 401111235144 is 441532111104.

It is a happy number.

401111235144 is a `hidden beast` number, since 401 + 1 + 11 + 235 + 14 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928498014 + ... + 928498445.

It is an arithmetic number, because the mean of its divisors is an integer number (34818683625).

Almost surely, 2^401111235144 is an apocalyptic number.

It is an amenable number.

401111235144 is an abundant number, since it is smaller than the sum of its proper divisors (713086640856).

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

401111235144 is a wasteful number, since it uses less digits than its factorization.

401111235144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856996474 (or 1856996464 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 401111235144 its reverse (441532111104), we get a palindrome (842643346248).

The spelling of 401111235144 in words is "four hundred one billion, one hundred eleven million, two hundred thirty-five thousand, one hundred forty-four".