11540430451311 has 4 divisors (see below), whose sum is σ = 15387240601752. Its totient is φ = 7693620300872.

The previous prime is 11540430451301. The next prime is 11540430451387. The reversal of 11540430451311 is 11315403404511.

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 11540430451311 - 2¹⁹ = 11540429927023 is a prime.

It is a super-2 number, since 2×11540430451311² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540430451301) 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, 1923405075216 + ... + 1923405075221.

It is an arithmetic number, because the mean of its divisors is an integer number (3846810150438).

Almost surely, 2^{11540430451311} is an apocalyptic number.

11540430451311 is a deficient number, since it is larger than the sum of its proper divisors (3846810150441).

11540430451311 is an equidigital number, since it uses as much as digits as its factorization.

11540430451311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846810150440.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 11540430451311 its reverse (11315403404511), we get a palindrome (22855833855822).

The spelling of 11540430451311 in words is "eleven trillion, five hundred forty billion, four hundred thirty million, four hundred fifty-one thousand, three hundred eleven".