40989646682 has 16 divisors (see below), whose sum is σ = 61598363112. Its totient is φ = 20456893440.

The previous prime is 40989646609. The next prime is 40989646729. The reversal of 40989646682 is 28664698904.

It is a Cunningham number, because it is equal to 202459²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 40989646681 + 1 = 202459^2 + 1^2 .

It is a super-2 number, since 2×40989646682² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771018 + ... + 2785770.

Almost surely, 2^40989646682 is an apocalyptic number.

40989646682 is a deficient number, since it is larger than the sum of its proper divisors (20608716430).

40989646682 is a wasteful number, since it uses less digits than its factorization.

40989646682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17233.

The product of its (nonzero) digits is 35831808, while the sum is 62.

The spelling of 40989646682 in words is "forty billion, nine hundred eighty-nine million, six hundred forty-six thousand, six hundred eighty-two".