40553002581 has 64 divisors (see below), whose sum is σ = 68091641856. Its totient is φ = 20899296000.

The previous prime is 40553002561. The next prime is 40553002643. The reversal of 40553002581 is 18520035504.

40553002581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40553002581 - 2⁶ = 40553002517 is a prime.

It is a super-2 number, since 2×40553002581² (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 (40553002541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2506540 + ... + 2522666.

It is an arithmetic number, because the mean of its divisors is an integer number (1063931904).

Almost surely, 2^40553002581 is an apocalyptic number.

It is an amenable number.

40553002581 is a deficient number, since it is larger than the sum of its proper divisors (27538639275).

40553002581 is a wasteful number, since it uses less digits than its factorization.

40553002581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16362.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 40553002581 in words is "forty billion, five hundred fifty-three million, two thousand, five hundred eighty-one".