40244531623 has 4 divisors (see below), whose sum is σ = 40245087960. Its totient is φ = 40243975288.

The previous prime is 40244531611. The next prime is 40244531633. The reversal of 40244531623 is 32613544204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40244531623 - 2²¹ = 40242434471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40244531633) 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 3 ways as a sum of consecutive naturals, for example, 149965 + ... + 320902.

It is an arithmetic number, because the mean of its divisors is an integer number (10061271990).

Almost surely, 2^40244531623 is an apocalyptic number.

40244531623 is a deficient number, since it is larger than the sum of its proper divisors (556337).

40244531623 is an equidigital number, since it uses as much as digits as its factorization.

40244531623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556336.

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 40244531623 in words is "forty billion, two hundred forty-four million, five hundred thirty-one thousand, six hundred twenty-three".