40040455623 has 32 divisors (see below), whose sum is σ = 65096317440. Its totient is φ = 21369953280.

The previous prime is 40040455613. The next prime is 40040455661. The reversal of 40040455623 is 32655404004.

It is not a de Polignac number, because 40040455623 - 2⁵ = 40040455591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040455613) 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 31 ways as a sum of consecutive naturals, for example, 381318 + ... + 474851.

It is an arithmetic number, because the mean of its divisors is an integer number (2034259920).

Almost surely, 2^40040455623 is an apocalyptic number.

40040455623 is a deficient number, since it is larger than the sum of its proper divisors (25055861817).

40040455623 is a wasteful number, since it uses less digits than its factorization.

40040455623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856327.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 40040455623 its reverse (32655404004), we get a palindrome (72695859627).

The spelling of 40040455623 in words is "forty billion, forty million, four hundred fifty-five thousand, six hundred twenty-three".