11640127971 has 8 divisors (see below), whose sum is σ = 15529000960. Its totient is φ = 7755670152.

The previous prime is 11640127963. The next prime is 11640127979. The reversal of 11640127971 is 17972104611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11640127963) and next prime (11640127979).

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

It is not a de Polignac number, because 11640127971 - 2³ = 11640127963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11640127979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097635 + ... + 1108188.

It is an arithmetic number, because the mean of its divisors is an integer number (1941125120).

Almost surely, 2^11640127971 is an apocalyptic number.

11640127971 is a deficient number, since it is larger than the sum of its proper divisors (3888872989).

11640127971 is a wasteful number, since it uses less digits than its factorization.

11640127971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207585.

The product of its (nonzero) digits is 21168, while the sum is 39.

The spelling of 11640127971 in words is "eleven billion, six hundred forty million, one hundred twenty-seven thousand, nine hundred seventy-one".