40281582544 has 80 divisors (see below), whose sum is σ = 89696509056. Its totient is φ = 17166758400.

The previous prime is 40281582541. The next prime is 40281582563. The reversal of 40281582544 is 44528518204.

It is a self number, because there is not a number n which added to its sum of digits gives 40281582544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40281582541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17089014 + ... + 17091370.

Almost surely, 2^40281582544 is an apocalyptic number.

It is an amenable number.

40281582544 is an abundant number, since it is smaller than the sum of its proper divisors (49414926512).

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

40281582544 is a wasteful number, since it uses less digits than its factorization.

40281582544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164 (or 3158 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 43.

The spelling of 40281582544 in words is "forty billion, two hundred eighty-one million, five hundred eighty-two thousand, five hundred forty-four".