40645186027 has 4 divisors (see below), whose sum is σ = 40681837440. Its totient is φ = 40608534616.

The previous prime is 40645186013. The next prime is 40645186033. The reversal of 40645186027 is 72068154604.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40645186027 is a prime.

It is a super-2 number, since 2×40645186027² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40645186007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18324043 + ... + 18326260.

It is an arithmetic number, because the mean of its divisors is an integer number (10170459360).

Almost surely, 2^40645186027 is an apocalyptic number.

40645186027 is a deficient number, since it is larger than the sum of its proper divisors (36651413).

40645186027 is a wasteful number, since it uses less digits than its factorization.

40645186027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36651412.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 40645186027 in words is "forty billion, six hundred forty-five million, one hundred eighty-six thousand, twenty-seven".