13088961649 has 3 divisors (see below), whose sum is σ = 13089076057. Its totient is φ = 13088847242.

The previous prime is 13088961629. The next prime is 13088961659. The reversal of 13088961649 is 94616988031.

The square root of 13088961649 is 114407.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94616988031 = 51803 ⋅1826477.

It is not a de Polignac number, because 13088961649 - 2¹¹ = 13088959601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13088961649.

It is not an unprimeable number, because it can be changed into a prime (13088961629) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 57204 + ... + 171610.

Almost surely, 2^13088961649 is an apocalyptic number.

13088961649 is the 114407-th square number.

13088961649 is the 57204-th centered octagonal number.

It is an amenable number.

13088961649 is a deficient number, since it is larger than the sum of its proper divisors (114408).

13088961649 is an frugal number, since it uses more digits than its factorization.

13088961649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228814 (or 114407 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 13088961649 in words is "thirteen billion, eighty-eight million, nine hundred sixty-one thousand, six hundred forty-nine".