11646732251 has 16 divisors (see below), whose sum is σ = 14649113088. Its totient is φ = 8995056000.

The previous prime is 11646732217. The next prime is 11646732263. The reversal of 11646732251 is 15223764611.

It is not a de Polignac number, because 11646732251 - 2¹⁴ = 11646715867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11646732751) 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 15 ways as a sum of consecutive naturals, for example, 660575 + ... + 677976.

It is an arithmetic number, because the mean of its divisors is an integer number (915569568).

Almost surely, 2^11646732251 is an apocalyptic number.

11646732251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11646732251 is a deficient number, since it is larger than the sum of its proper divisors (3002380837).

11646732251 is a wasteful number, since it uses less digits than its factorization.

11646732251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338682.

The product of its digits is 60480, while the sum is 38.

The spelling of 11646732251 in words is "eleven billion, six hundred forty-six million, seven hundred thirty-two thousand, two hundred fifty-one".