40024312645 has 16 divisors (see below), whose sum is σ = 48181351680. Its totient is φ = 31918132224.

The previous prime is 40024312637. The next prime is 40024312673. The reversal of 40024312645 is 54621342004.

It is a cyclic number.

It is not a de Polignac number, because 40024312645 - 2³ = 40024312637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2663824 + ... + 2678806.

It is an arithmetic number, because the mean of its divisors is an integer number (3011334480).

Almost surely, 2^40024312645 is an apocalyptic number.

It is an amenable number.

40024312645 is a deficient number, since it is larger than the sum of its proper divisors (8157039035).

40024312645 is a wasteful number, since it uses less digits than its factorization.

40024312645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16644.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 40024312645 its reverse (54621342004), we get a palindrome (94645654649).

The spelling of 40024312645 in words is "forty billion, twenty-four million, three hundred twelve thousand, six hundred forty-five".