40203221545 has 16 divisors (see below), whose sum is σ = 51323856768. Its totient is φ = 30127184640.

The previous prime is 40203221501. The next prime is 40203221549. The reversal of 40203221545 is 54512230204.

It is not a de Polignac number, because 40203221545 - 2²⁷ = 40069003817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40203221549) 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, 1102869 + ... + 1138738.

It is an arithmetic number, because the mean of its divisors is an integer number (3207741048).

Almost surely, 2^40203221545 is an apocalyptic number.

It is an amenable number.

40203221545 is a deficient number, since it is larger than the sum of its proper divisors (11120635223).

40203221545 is a wasteful number, since it uses less digits than its factorization.

40203221545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241840.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 40203221545 its reverse (54512230204), we get a palindrome (94715451749).

The spelling of 40203221545 in words is "forty billion, two hundred three million, two hundred twenty-one thousand, five hundred forty-five".