40826798581 has 8 divisors (see below), whose sum is σ = 41154208128. Its totient is φ = 40499628000.

The previous prime is 40826798569. The next prime is 40826798599. The reversal of 40826798581 is 18589762804.

It is a happy number.

40826798581 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 40826798581 - 2¹¹ = 40826796533 is a prime.

It is a super-2 number, since 2×40826798581² (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 (40826798561) 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, 291561 + ... + 408241.

It is an arithmetic number, because the mean of its divisors is an integer number (5144276016).

Almost surely, 2^40826798581 is an apocalyptic number.

It is an amenable number.

40826798581 is a deficient number, since it is larger than the sum of its proper divisors (327409547).

40826798581 is a wasteful number, since it uses less digits than its factorization.

40826798581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119483.

The product of its (nonzero) digits is 7741440, while the sum is 58.

The spelling of 40826798581 in words is "forty billion, eight hundred twenty-six million, seven hundred ninety-eight thousand, five hundred eighty-one".