11726172516 has 12 divisors (see below), whose sum is σ = 27361069232. Its totient is φ = 3908724168.

The previous prime is 11726172463. The next prime is 11726172517. The reversal of 11726172516 is 61527162711.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (11726172517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488590510 + ... + 488590533.

Almost surely, 2^11726172516 is an apocalyptic number.

It is an amenable number.

11726172516 is an abundant number, since it is smaller than the sum of its proper divisors (15634896716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11726172516 is a wasteful number, since it uses less digits than its factorization.

11726172516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977181050 (or 977181048 counting only the distinct ones).

The product of its digits is 35280, while the sum is 39.

The spelling of 11726172516 in words is "eleven billion, seven hundred twenty-six million, one hundred seventy-two thousand, five hundred sixteen".