14540661613 has 4 divisors (see below), whose sum is σ = 14850037440. Its totient is φ = 14231285788.

The previous prime is 14540661599. The next prime is 14540661637. The reversal of 14540661613 is 31616604541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31616604541 = 17921 ⋅1764221.

It is a cyclic number.

It is not a de Polignac number, because 14540661613 - 2²⁹ = 14003790701 is a prime.

It is a super-2 number, since 2×14540661613² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14540661643) 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, 154687843 + ... + 154687936.

It is an arithmetic number, because the mean of its divisors is an integer number (3712509360).

Almost surely, 2^14540661613 is an apocalyptic number.

It is an amenable number.

14540661613 is a deficient number, since it is larger than the sum of its proper divisors (309375827).

14540661613 is an equidigital number, since it uses as much as digits as its factorization.

14540661613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309375826.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 14540661613 in words is "fourteen billion, five hundred forty million, six hundred sixty-one thousand, six hundred thirteen".