40144044692 has 24 divisors (see below), whose sum is σ = 70924761600. Its totient is φ = 19879973856.

The previous prime is 40144044691. The next prime is 40144044719. The reversal of 40144044692 is 29644044104.

It is a super-2 number, since 2×40144044692² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40144044691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168553 + ... + 1202415.

It is an arithmetic number, because the mean of its divisors is an integer number (2955198400).

Almost surely, 2^40144044692 is an apocalyptic number.

It is an amenable number.

40144044692 is a deficient number, since it is larger than the sum of its proper divisors (30780716908).

40144044692 is a wasteful number, since it uses less digits than its factorization.

40144044692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36695 (or 36693 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

Adding to 40144044692 its reverse (29644044104), we get a palindrome (69788088796).

The spelling of 40144044692 in words is "forty billion, one hundred forty-four million, forty-four thousand, six hundred ninety-two".