40724935644 has 12 divisors (see below), whose sum is σ = 95024849864. Its totient is φ = 13574978544.

The previous prime is 40724935637. The next prime is 40724935649. The reversal of 40724935644 is 44653942704.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 40724935593 and 40724935602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40724935649) 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, 1696872307 + ... + 1696872330.

Almost surely, 2^40724935644 is an apocalyptic number.

It is an amenable number.

40724935644 is an abundant number, since it is smaller than the sum of its proper divisors (54299914220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40724935644 is a wasteful number, since it uses less digits than its factorization.

40724935644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393744644 (or 3393744642 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 40724935644 in words is "forty billion, seven hundred twenty-four million, nine hundred thirty-five thousand, six hundred forty-four".