40807377447681 has 16 divisors (see below), whose sum is σ = 58595408363520. Its totient is φ = 25112146680960.

The previous prime is 40807377447631. The next prime is 40807377447701. The reversal of 40807377447681 is 18674477370804.

It is not a de Polignac number, because 40807377447681 - 2⁷ = 40807377447553 is a prime.

It is a super-2 number, since 2×40807377447681² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40807377447631) 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, 10957861 + ... + 14201741.

It is an arithmetic number, because the mean of its divisors is an integer number (3662213022720).

Almost surely, 2^{40807377447681} is an apocalyptic number.

It is an amenable number.

40807377447681 is a deficient number, since it is larger than the sum of its proper divisors (17788030915839).

40807377447681 is a wasteful number, since it uses less digits than its factorization.

40807377447681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3566456.

The product of its (nonzero) digits is 177020928, while the sum is 66.

The spelling of 40807377447681 in words is "forty trillion, eight hundred seven billion, three hundred seventy-seven million, four hundred forty-seven thousand, six hundred eighty-one".