5111440235513 has 4 divisors (see below), whose sum is σ = 5111446215540. Its totient is φ = 5111434255488.

The previous prime is 5111440235509. The next prime is 5111440235519. The reversal of 5111440235513 is 3155320441115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3434694943849 + 1676745291664 = 1853293^2 + 1294892^2 .

It is a cyclic number.

It is not a de Polignac number, because 5111440235513 - 2² = 5111440235509 is a prime.

It is a super-2 number, since 2×5111440235513² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5111440235519) 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, 1440068 + ... + 3506661.

It is an arithmetic number, because the mean of its divisors is an integer number (1277861553885).

Almost surely, 2^{5111440235513} is an apocalyptic number.

It is an amenable number.

5111440235513 is a deficient number, since it is larger than the sum of its proper divisors (5980027).

5111440235513 is a wasteful number, since it uses less digits than its factorization.

5111440235513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5980026.

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 5111440235513 its reverse (3155320441115), we get a palindrome (8266760676628).

The spelling of 5111440235513 in words is "five trillion, one hundred eleven billion, four hundred forty million, two hundred thirty-five thousand, five hundred thirteen".