2159168826613 has 6 divisors (see below), whose sum is σ = 2196385184534. Its totient is φ = 2122572741384.

The previous prime is 2159168826571. The next prime is 2159168826629. The reversal of 2159168826613 is 3166288619512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1612386960804 + 546781865809 = 1269798^2 + 739447^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2159168826613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159168826673) 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, 310132806 + ... + 310139767.

Almost surely, 2^{2159168826613} is an apocalyptic number.

It is an amenable number.

2159168826613 is a deficient number, since it is larger than the sum of its proper divisors (37216357921).

2159168826613 is an frugal number, since it uses more digits than its factorization.

2159168826613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620272691 (or 620272632 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 58.

The spelling of 2159168826613 in words is "two trillion, one hundred fifty-nine billion, one hundred sixty-eight million, eight hundred twenty-six thousand, six hundred thirteen".