40402644023 has 16 divisors (see below), whose sum is σ = 48913865280. Its totient is φ = 32578215936.

The previous prime is 40402644017. The next prime is 40402644041. The reversal of 40402644023 is 32044620404.

It is not a de Polignac number, because 40402644023 - 2¹⁶ = 40402578487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402644053) 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 15 ways as a sum of consecutive naturals, for example, 173615 + ... + 333087.

It is an arithmetic number, because the mean of its divisors is an integer number (3057116580).

Almost surely, 2^40402644023 is an apocalyptic number.

40402644023 is a deficient number, since it is larger than the sum of its proper divisors (8511221257).

40402644023 is a wasteful number, since it uses less digits than its factorization.

40402644023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161626.

The product of its (nonzero) digits is 18432, while the sum is 29.

The spelling of 40402644023 in words is "forty billion, four hundred two million, six hundred forty-four thousand, twenty-three".