11443420001 has 12 divisors (see below), whose sum is σ = 13091252412. Its totient is φ = 9941791488.

The previous prime is 11443419983. The next prime is 11443420033. The reversal of 11443420001 is 10002434411.

It can be written as a sum of positive squares in 6 ways, for example, as 36966400 + 11406453601 = 6080^2 + 106801^2 .

It is not a de Polignac number, because 11443420001 - 2⁶ = 11443419937 is a prime.

It is a super-2 number, since 2×11443420001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11443420061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1519190 + ... + 1526703.

It is an arithmetic number, because the mean of its divisors is an integer number (1090937701).

Almost surely, 2^11443420001 is an apocalyptic number.

It is an amenable number.

11443420001 is a deficient number, since it is larger than the sum of its proper divisors (1647832411).

11443420001 is a wasteful number, since it uses less digits than its factorization.

11443420001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045940 (or 3045923 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 11443420001 its reverse (10002434411), we get a palindrome (21445854412).

The spelling of 11443420001 in words is "eleven billion, four hundred forty-three million, four hundred twenty thousand, one".