40002442623 has 128 divisors (see below), whose sum is σ = 73833984000. Its totient is φ = 21043255680.

The previous prime is 40002442619. The next prime is 40002442639. The reversal of 40002442623 is 32624420004.

It is not a de Polignac number, because 40002442623 - 2² = 40002442619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40002442693) 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 127 ways as a sum of consecutive naturals, for example, 10194940 + ... + 10198862.

It is an arithmetic number, because the mean of its divisors is an integer number (576828000).

Almost surely, 2^40002442623 is an apocalyptic number.

40002442623 is a deficient number, since it is larger than the sum of its proper divisors (33831541377).

40002442623 is a wasteful number, since it uses less digits than its factorization.

40002442623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114 (or 4108 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40002442623 its reverse (32624420004), we get a palindrome (72626862627).

The spelling of 40002442623 in words is "forty billion, two million, four hundred forty-two thousand, six hundred twenty-three".