40220387405 has 16 divisors (see below), whose sum is σ = 55423310400. Its totient is φ = 27711653760.

The previous prime is 40220387371. The next prime is 40220387407. The reversal of 40220387405 is 50478302204.

It is not a de Polignac number, because 40220387405 - 2²⁴ = 40203610189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40220387407) 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 15 ways as a sum of consecutive naturals, for example, 19243160 + ... + 19245249.

It is an arithmetic number, because the mean of its divisors is an integer number (3463956900).

Almost surely, 2^40220387405 is an apocalyptic number.

It is an amenable number.

40220387405 is a deficient number, since it is larger than the sum of its proper divisors (15202922995).

40220387405 is a wasteful number, since it uses less digits than its factorization.

40220387405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38488444.

The product of its (nonzero) digits is 53760, while the sum is 35.

Adding to 40220387405 its reverse (50478302204), we get a palindrome (90698689609).

The spelling of 40220387405 in words is "forty billion, two hundred twenty million, three hundred eighty-seven thousand, four hundred five".