12769948501 has 4 divisors (see below), whose sum is σ = 12789504972. Its totient is φ = 12750392032.

The previous prime is 12769948423. The next prime is 12769948553. The reversal of 12769948501 is 10584996721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3053115025 + 9716833476 = 55255^2 + 98574^2 .

It is a cyclic number.

It is not a de Polignac number, because 12769948501 - 2³³ = 4180013909 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 (12769948591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9777256 + ... + 9778561.

It is an arithmetic number, because the mean of its divisors is an integer number (3197376243).

Almost surely, 2^12769948501 is an apocalyptic number.

It is an amenable number.

12769948501 is a deficient number, since it is larger than the sum of its proper divisors (19556471).

12769948501 is an equidigital number, since it uses as much as digits as its factorization.

12769948501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19556470.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 12769948501 in words is "twelve billion, seven hundred sixty-nine million, nine hundred forty-eight thousand, five hundred one".