11712988251 has 24 divisors (see below), whose sum is σ = 17054390496. Its totient is φ = 7746312960.

The previous prime is 11712988237. The next prime is 11712988267. The reversal of 11712988251 is 15288921711.

It is not a de Polignac number, because 11712988251 - 2¹⁴ = 11712971867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11712988197 and 11712988206.

It is not an unprimeable number, because it can be changed into a prime (11712988351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 560181 + ... + 580713.

It is an arithmetic number, because the mean of its divisors is an integer number (710599604).

Almost surely, 2^11712988251 is an apocalyptic number.

11712988251 is a deficient number, since it is larger than the sum of its proper divisors (5341402245).

11712988251 is a wasteful number, since it uses less digits than its factorization.

11712988251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21043 (or 21040 counting only the distinct ones).

The product of its digits is 80640, while the sum is 45.

The spelling of 11712988251 in words is "eleven billion, seven hundred twelve million, nine hundred eighty-eight thousand, two hundred fifty-one".