1643514505153 has 4 divisors (see below), whose sum is σ = 1646178224580. Its totient is φ = 1640850785728.

The previous prime is 1643514505133. The next prime is 1643514505183. The reversal of 1643514505153 is 3515054153461.

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 789124858929 + 854389646224 = 888327^2 + 924332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1643514505153 - 2³³ = 1634924570561 is a prime.

It is a super-2 number, since 2×1643514505153² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1643514505133) 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, 1331858788 + ... + 1331860021.

It is an arithmetic number, because the mean of its divisors is an integer number (411544556145).

Almost surely, 2^{1643514505153} is an apocalyptic number.

It is an amenable number.

1643514505153 is a deficient number, since it is larger than the sum of its proper divisors (2663719427).

1643514505153 is an equidigital number, since it uses as much as digits as its factorization.

1643514505153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663719426.

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 1643514505153 in words is "one trillion, six hundred forty-three billion, five hundred fourteen million, five hundred five thousand, one hundred fifty-three".