40744633609 has 9 divisors (see below), whose sum is σ = 41341125709. Its totient is φ = 40156635820.

The previous prime is 40744633583. The next prime is 40744633637. The reversal of 40744633609 is 90633644704.

The square root of 40744633609 is 201853.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 40744633609 - 2⁵ = 40744633577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40744633409) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14330142 + ... + 14332984.

Almost surely, 2^40744633609 is an apocalyptic number.

40744633609 is the 201853-rd square number.

40744633609 is the 100927-th centered octagonal number.

It is an amenable number.

40744633609 is a deficient number, since it is larger than the sum of its proper divisors (596492100).

40744633609 is an frugal number, since it uses more digits than its factorization.

40744633609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5828 (or 2914 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 46.

The spelling of 40744633609 in words is "forty billion, seven hundred forty-four million, six hundred thirty-three thousand, six hundred nine".