40027006646 has 16 divisors (see below), whose sum is σ = 65759698368. Its totient is φ = 18121605000.

The previous prime is 40027006609. The next prime is 40027006693. The reversal of 40027006646 is 64660072004.

It is a happy number.

It is a super-2 number, since 2×40027006646² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3618800 + ... + 3629843.

It is an arithmetic number, because the mean of its divisors is an integer number (4109981148).

Almost surely, 2^40027006646 is an apocalyptic number.

40027006646 is a deficient number, since it is larger than the sum of its proper divisors (25732691722).

40027006646 is a wasteful number, since it uses less digits than its factorization.

40027006646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7248907.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 40027006646 in words is "forty billion, twenty-seven million, six thousand, six hundred forty-six".