12765528651 has 8 divisors (see below), whose sum is σ = 17916531520. Its totient is φ = 8062439112.

The previous prime is 12765528583. The next prime is 12765528679. The reversal of 12765528651 is 15682556721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12765528651 - 2¹⁰ = 12765527627 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 12765528651.

It is not an unprimeable number, because it can be changed into a prime (12765528691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111978265 + ... + 111978378.

It is an arithmetic number, because the mean of its divisors is an integer number (2239566440).

Almost surely, 2^12765528651 is an apocalyptic number.

12765528651 is a deficient number, since it is larger than the sum of its proper divisors (5151002869).

12765528651 is a wasteful number, since it uses less digits than its factorization.

12765528651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223956665.

The product of its digits is 1008000, while the sum is 48.

The spelling of 12765528651 in words is "twelve billion, seven hundred sixty-five million, five hundred twenty-eight thousand, six hundred fifty-one".