40581741581 has 8 divisors (see below), whose sum is σ = 42359003520. Its totient is φ = 38805549552.

The previous prime is 40581741517. The next prime is 40581741583. The reversal of 40581741581 is 18514718504.

It is a happy number.

40581741581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40581741581 - 2⁶ = 40581741517 is a prime.

It is a super-2 number, since 2×40581741581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40581741583) 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, 189470 + ... + 342143.

It is an arithmetic number, because the mean of its divisors is an integer number (5294875440).

Almost surely, 2^40581741581 is an apocalyptic number.

It is an amenable number.

40581741581 is a deficient number, since it is larger than the sum of its proper divisors (1777261939).

40581741581 is a wasteful number, since it uses less digits than its factorization.

40581741581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534955.

The product of its (nonzero) digits is 179200, while the sum is 44.

The spelling of 40581741581 in words is "forty billion, five hundred eighty-one million, seven hundred forty-one thousand, five hundred eighty-one".