13251002769 has 9 divisors (see below), whose sum is σ = 19140836169. Its totient is φ = 8833771620.

The previous prime is 13251002761. The next prime is 13251002777. The reversal of 13251002769 is 96720015231.

The square root of 13251002769 is 115113.

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

13251002769 is a `hidden beast` number, since 132 + 510 + 0 + 2 + 7 + 6 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (13251002761) and next prime (13251002777).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 13251002769 - 2³ = 13251002761 is a prime.

It is a super-2 number, since 2×13251002769² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13251002761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 326154 + ... + 364524.

Almost surely, 2^13251002769 is an apocalyptic number.

13251002769 is the 115113-rd square number.

13251002769 is the 57557-th centered octagonal number.

It is an amenable number.

13251002769 is a deficient number, since it is larger than the sum of its proper divisors (5889833400).

13251002769 is an frugal number, since it uses more digits than its factorization.

13251002769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76748 (or 38374 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

Multiplying 13251002769 by its sum of digits (36), we get a square (477036099684 = 690678²).

The spelling of 13251002769 in words is "thirteen billion, two hundred fifty-one million, two thousand, seven hundred sixty-nine".