40866116461 has 4 divisors (see below), whose sum is σ = 40903370172. Its totient is φ = 40828862752.

The previous prime is 40866116429. The next prime is 40866116471. The reversal of 40866116461 is 16461166804.

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 12247627561 + 28618488900 = 110669^2 + 169170^2 .

It is a cyclic number.

It is not a de Polignac number, because 40866116461 - 2⁵ = 40866116429 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 (40866116471) 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, 18625210 + ... + 18627403.

It is an arithmetic number, because the mean of its divisors is an integer number (10225842543).

Almost surely, 2^40866116461 is an apocalyptic number.

It is an amenable number.

40866116461 is a deficient number, since it is larger than the sum of its proper divisors (37253711).

40866116461 is a wasteful number, since it uses less digits than its factorization.

40866116461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37253710.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 40866116461 in words is "forty billion, eight hundred sixty-six million, one hundred sixteen thousand, four hundred sixty-one".