11634478271 has 8 divisors (see below), whose sum is σ = 12680396400. Its totient is φ = 10610125632.

The previous prime is 11634478267. The next prime is 11634478301. The reversal of 11634478271 is 17287443611.

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

It is a cyclic number.

It is not a de Polignac number, because 11634478271 - 2² = 11634478267 is a prime.

It is a super-2 number, since 2×11634478271² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19634478271) 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 7 ways as a sum of consecutive naturals, for example, 5390246 + ... + 5392403.

It is an arithmetic number, because the mean of its divisors is an integer number (1585049550).

Almost surely, 2^11634478271 is an apocalyptic number.

11634478271 is a deficient number, since it is larger than the sum of its proper divisors (1045918129).

11634478271 is a wasteful number, since it uses less digits than its factorization.

11634478271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10782745.

The product of its digits is 225792, while the sum is 44.

The spelling of 11634478271 in words is "eleven billion, six hundred thirty-four million, four hundred seventy-eight thousand, two hundred seventy-one".