2113455935529 has 27 divisors (see below), whose sum is σ = 3061659128983. Its totient is φ = 1404879706464.

The previous prime is 2113455935509. The next prime is 2113455935543. The reversal of 2113455935529 is 9255395543112.

The square root of 2113455935529 is 1453773.

It is a perfect power (a square), and thus also a powerful number.

2113455935529 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 4 + 559 + 35 + 52 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1860285949929 + 253169985600 = 1363923^2 + 503160^2 .

It is not a de Polignac number, because 2113455935529 - 2¹⁹ = 2113455411241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113455935509) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2612429677 + ... + 2612430485.

Almost surely, 2^{2113455935529} is an apocalyptic number.

2113455935529 is the 1453773-rd square number.

2113455935529 is the 726887-th centered octagonal number.

It is an amenable number.

2113455935529 is a deficient number, since it is larger than the sum of its proper divisors (948203193454).

2113455935529 is an frugal number, since it uses more digits than its factorization.

2113455935529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822 (or 1411 counting only the distinct ones).

The product of its digits is 7290000, while the sum is 54.

The spelling of 2113455935529 in words is "two trillion, one hundred thirteen billion, four hundred fifty-five million, nine hundred thirty-five thousand, five hundred twenty-nine".