40111001001 has 24 divisors (see below), whose sum is σ = 58348680000. Its totient is φ = 26551310112.

The previous prime is 40111000997. The next prime is 40111001003. The reversal of 40111001001 is 10010011104.

It is not a de Polignac number, because 40111001001 - 2² = 40111000997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (40111001003) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6056670 + ... + 6063288.

It is an arithmetic number, because the mean of its divisors is an integer number (2431195000).

Almost surely, 2^40111001001 is an apocalyptic number.

It is an amenable number.

40111001001 is a deficient number, since it is larger than the sum of its proper divisors (18237678999).

40111001001 is a wasteful number, since it uses less digits than its factorization.

40111001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11293 (or 11290 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 40111001001 its reverse (10010011104), we get a palindrome (50121012105).

The spelling of 40111001001 in words is "forty billion, one hundred eleven million, one thousand, one".