40639086182161 has 4 divisors (see below), whose sum is σ = 40639131108324. Its totient is φ = 40639041256000.

The previous prime is 40639086182159. The next prime is 40639086182183. The reversal of 40639086182161 is 16128168093604.

40639086182161 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 2361849522561 + 38277236659600 = 1536831^2 + 6186860^2 .

It is a cyclic number.

It is not a de Polignac number, because 40639086182161 - 2¹ = 40639086182159 is a prime.

It is a super-2 number, since 2×40639086182161² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40639086182111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21077740 + ... + 22924861.

It is an arithmetic number, because the mean of its divisors is an integer number (10159782777081).

Almost surely, 2^{40639086182161} is an apocalyptic number.

It is an amenable number.

40639086182161 is a deficient number, since it is larger than the sum of its proper divisors (44926163).

40639086182161 is an equidigital number, since it uses as much as digits as its factorization.

40639086182161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44926162.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 40639086182161 in words is "forty trillion, six hundred thirty-nine billion, eighty-six million, one hundred eighty-two thousand, one hundred sixty-one".