11440154513 has 4 divisors (see below), whose sum is σ = 11440395060. Its totient is φ = 11439913968.

The previous prime is 11440154447. The next prime is 11440154549. The reversal of 11440154513 is 31545104411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2808258049 + 8631896464 = 52993^2 + 92908^2 .

It is a cyclic number.

It is not a de Polignac number, because 11440154513 - 2¹⁶ = 11440088977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11440159513) 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, 22370 + ... + 152907.

It is an arithmetic number, because the mean of its divisors is an integer number (2860098765).

Almost surely, 2^11440154513 is an apocalyptic number.

It is an amenable number.

11440154513 is a deficient number, since it is larger than the sum of its proper divisors (240547).

11440154513 is an equidigital number, since it uses as much as digits as its factorization.

11440154513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240546.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 11440154513 its reverse (31545104411), we get a palindrome (42985258924).

The spelling of 11440154513 in words is "eleven billion, four hundred forty million, one hundred fifty-four thousand, five hundred thirteen".