40956680861 has 4 divisors (see below), whose sum is σ = 40981701852. Its totient is φ = 40931659872.

The previous prime is 40956680851. The next prime is 40956680909. The reversal of 40956680861 is 16808665904.

40956680861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2935580761 + 38021100100 = 54181^2 + 194990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40956680861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40956680851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12508040 + ... + 12511313.

It is an arithmetic number, because the mean of its divisors is an integer number (10245425463).

Almost surely, 2^40956680861 is an apocalyptic number.

It is an amenable number.

40956680861 is a deficient number, since it is larger than the sum of its proper divisors (25020991).

40956680861 is a wasteful number, since it uses less digits than its factorization.

40956680861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25020990.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 40956680861 in words is "forty billion, nine hundred fifty-six million, six hundred eighty thousand, eight hundred sixty-one".