14640834021545 has 4 divisors (see below), whose sum is σ = 17569000825860. Its totient is φ = 11712667217232.

The previous prime is 14640834021353. The next prime is 14640834021553. The reversal of 14640834021545 is 54512043804641.

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 10656255129664 + 3984578891881 = 3264392^2 + 1996141^2 .

It is a cyclic number.

It is not a de Polignac number, because 14640834021545 - 2¹² = 14640834017449 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 14640834021545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1464083402150 + ... + 1464083402159.

It is an arithmetic number, because the mean of its divisors is an integer number (4392250206465).

Almost surely, 2^{14640834021545} is an apocalyptic number.

It is an amenable number.

14640834021545 is a deficient number, since it is larger than the sum of its proper divisors (2928166804315).

14640834021545 is an equidigital number, since it uses as much as digits as its factorization.

14640834021545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928166804314.

The product of its (nonzero) digits is 1843200, while the sum is 47.

The spelling of 14640834021545 in words is "fourteen trillion, six hundred forty billion, eight hundred thirty-four million, twenty-one thousand, five hundred forty-five".