40442723666 has 8 divisors (see below), whose sum is σ = 61027344000. Its totient is φ = 20100275668.

The previous prime is 40442723627. The next prime is 40442723681. The reversal of 40442723666 is 66632724404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40442723666² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 60542666 + ... + 60543333.

It is an arithmetic number, because the mean of its divisors is an integer number (7628418000).

Almost surely, 2^40442723666 is an apocalyptic number.

40442723666 is a deficient number, since it is larger than the sum of its proper divisors (20584620334).

40442723666 is a wasteful number, since it uses less digits than its factorization.

40442723666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121086168.

The product of its (nonzero) digits is 1161216, while the sum is 44.

The spelling of 40442723666 in words is "forty billion, four hundred forty-two million, seven hundred twenty-three thousand, six hundred sixty-six".