40221126173 has 4 divisors (see below), whose sum is σ = 41518581888. Its totient is φ = 38923670460.

The previous prime is 40221126167. The next prime is 40221126193. The reversal of 40221126173 is 37162112204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40221126173 - 2⁶ = 40221126109 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 (40221126133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648727811 + ... + 648727872.

It is an arithmetic number, because the mean of its divisors is an integer number (10379645472).

Almost surely, 2^40221126173 is an apocalyptic number.

It is an amenable number.

40221126173 is a deficient number, since it is larger than the sum of its proper divisors (1297455715).

40221126173 is a wasteful number, since it uses less digits than its factorization.

40221126173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297455714.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 40221126173 its reverse (37162112204), we get a palindrome (77383238377).

The spelling of 40221126173 in words is "forty billion, two hundred twenty-one million, one hundred twenty-six thousand, one hundred seventy-three".