40989646759 has 2 divisors, whose sum is σ = 40989646760. Its totient is φ = 40989646758.

The previous prime is 40989646741. The next prime is 40989646783. The reversal of 40989646759 is 95764698904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40989646759 - 2¹⁷ = 40989515687 is a prime.

It is a super-2 number, since 2×40989646759² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40989646694 and 40989646703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40989646729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20494823379 + 20494823380.

It is an arithmetic number, because the mean of its divisors is an integer number (20494823380).

Almost surely, 2^40989646759 is an apocalyptic number.

40989646759 is a deficient number, since it is larger than the sum of its proper divisors (1).

40989646759 is an equidigital number, since it uses as much as digits as its factorization.

40989646759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117573120, while the sum is 67.

The spelling of 40989646759 in words is "forty billion, nine hundred eighty-nine million, six hundred forty-six thousand, seven hundred fifty-nine".