40041211351681 has 8 divisors (see below), whose sum is σ = 40995152199584. Its totient is φ = 39088304589600.

The previous prime is 40041211351597. The next prime is 40041211351723. The reversal of 40041211351681 is 18615311214004.

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 40041211351681 - 2⁷ = 40041211351553 is a prime.

It is a super-2 number, since 2×40041211351681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40041211351681.

It is not an unprimeable number, because it can be changed into a prime (40041211351781) 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, 258443091 + ... + 258597976.

It is an arithmetic number, because the mean of its divisors is an integer number (5124394024948).

Almost surely, 2^{40041211351681} is an apocalyptic number.

It is an amenable number.

40041211351681 is a deficient number, since it is larger than the sum of its proper divisors (953940847903).

40041211351681 is a wasteful number, since it uses less digits than its factorization.

40041211351681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517042911.

The product of its (nonzero) digits is 23040, while the sum is 37.

Adding to 40041211351681 its reverse (18615311214004), we get a palindrome (58656522565685).

The spelling of 40041211351681 in words is "forty trillion, forty-one billion, two hundred eleven million, three hundred fifty-one thousand, six hundred eighty-one".