40644231001 has 4 divisors (see below), whose sum is σ = 44339161104. Its totient is φ = 36949300900.

The previous prime is 40644230993. The next prime is 40644231013. The reversal of 40644231001 is 10013244604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40644231001 - 2³ = 40644230993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40644231071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1847465035 + ... + 1847465056.

It is an arithmetic number, because the mean of its divisors is an integer number (11084790276).

Almost surely, 2^40644231001 is an apocalyptic number.

It is an amenable number.

40644231001 is a deficient number, since it is larger than the sum of its proper divisors (3694930103).

40644231001 is a wasteful number, since it uses less digits than its factorization.

40644231001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694930102.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 40644231001 its reverse (10013244604), we get a palindrome (50657475605).

The spelling of 40644231001 in words is "forty billion, six hundred forty-four million, two hundred thirty-one thousand, one".