40911893161 has 4 divisors (see below), whose sum is σ = 40965938692. Its totient is φ = 40857847632.

The previous prime is 40911893131. The next prime is 40911893171. The reversal of 40911893161 is 16139811904.

It is a happy number.

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 24946307136 + 15965586025 = 157944^2 + 126355^2 .

It is a cyclic number.

It is not a de Polignac number, because 40911893161 - 2⁵ = 40911893129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40911893131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27021630 + ... + 27023143.

It is an arithmetic number, because the mean of its divisors is an integer number (10241484673).

Almost surely, 2^40911893161 is an apocalyptic number.

It is an amenable number.

40911893161 is a deficient number, since it is larger than the sum of its proper divisors (54045531).

40911893161 is an equidigital number, since it uses as much as digits as its factorization.

40911893161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54045530.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 40911893161 in words is "forty billion, nine hundred eleven million, eight hundred ninety-three thousand, one hundred sixty-one".