13540044511 has 6 divisors (see below), whose sum is σ = 15750664080. Its totient is φ = 11605752396.

The previous prime is 13540044509. The next prime is 13540044521. The reversal of 13540044511 is 11544004531.

It is not a de Polignac number, because 13540044511 - 2¹ = 13540044509 is a prime.

It is a super-2 number, since 2×13540044511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13540044511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540044521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138163671 + ... + 138163768.

It is an arithmetic number, because the mean of its divisors is an integer number (2625110680).

Almost surely, 2^13540044511 is an apocalyptic number.

13540044511 is a deficient number, since it is larger than the sum of its proper divisors (2210619569).

13540044511 is an equidigital number, since it uses as much as digits as its factorization.

13540044511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276327453 (or 276327446 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 13540044511 in words is "thirteen billion, five hundred forty million, forty-four thousand, five hundred eleven".