40366422421 has 4 divisors (see below), whose sum is σ = 43471531852. Its totient is φ = 37261312992.

The previous prime is 40366422419. The next prime is 40366422427. The reversal of 40366422421 is 12422466304.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9674886321 + 30691536100 = 98361^2 + 175190^2 .

It is a cyclic number.

It is not a de Polignac number, because 40366422421 - 2¹ = 40366422419 is a prime.

It is a super-2 number, since 2×40366422421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40366422427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1552554696 + ... + 1552554721.

It is an arithmetic number, because the mean of its divisors is an integer number (10867882963).

Almost surely, 2^40366422421 is an apocalyptic number.

It is an amenable number.

40366422421 is a deficient number, since it is larger than the sum of its proper divisors (3105109431).

40366422421 is a wasteful number, since it uses less digits than its factorization.

40366422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105109430.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 40366422421 its reverse (12422466304), we get a palindrome (52788888725).

The spelling of 40366422421 in words is "forty billion, three hundred sixty-six million, four hundred twenty-two thousand, four hundred twenty-one".