4021401340443 has 64 divisors (see below), whose sum is σ = 5819550105600. Its totient is φ = 2463405584640.

The previous prime is 4021401340403. The next prime is 4021401340447. The reversal of 4021401340443 is 3440431041204.

It is not a de Polignac number, because 4021401340443 - 2³⁴ = 4004221471259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4021401340443.

It is not an unprimeable number, because it can be changed into a prime (4021401340447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 761770678 + ... + 761775956.

It is an arithmetic number, because the mean of its divisors is an integer number (90930470400).

Almost surely, 2^{4021401340443} is an apocalyptic number.

4021401340443 is a deficient number, since it is larger than the sum of its proper divisors (1798148765157).

4021401340443 is a wasteful number, since it uses less digits than its factorization.

4021401340443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9432.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 4021401340443 its reverse (3440431041204), we get a palindrome (7461832381647).

The spelling of 4021401340443 in words is "four trillion, twenty-one billion, four hundred one million, three hundred forty thousand, four hundred forty-three".