40221431442443 has 4 divisors (see below), whose sum is σ = 40255488540528. Its totient is φ = 40187374344360.

The previous prime is 40221431442433. The next prime is 40221431442499. The reversal of 40221431442443 is 34424413412204.

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 40221431442443 - 2⁴ = 40221431442427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40221431442397 and 40221431442406.

It is not an unprimeable number, because it can be changed into a prime (40221431442433) 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, 17028547271 + ... + 17028549632.

It is an arithmetic number, because the mean of its divisors is an integer number (10063872135132).

Almost surely, 2^{40221431442443} is an apocalyptic number.

40221431442443 is a deficient number, since it is larger than the sum of its proper divisors (34057098085).

40221431442443 is a wasteful number, since it uses less digits than its factorization.

40221431442443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34057098084.

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 40221431442443 its reverse (34424413412204), we get a palindrome (74645844854647).

The spelling of 40221431442443 in words is "forty trillion, two hundred twenty-one billion, four hundred thirty-one million, four hundred forty-two thousand, four hundred forty-three".