11640822471 has 16 divisors (see below), whose sum is σ = 18260114400. Its totient is φ = 7304045184.

The previous prime is 11640822469. The next prime is 11640822481. The reversal of 11640822471 is 17422804611.

It is a happy number.

11640822471 is a `hidden beast` number, since 1 + 1 + 6 + 408 + 2 + 247 + 1 = 666.

It is not a de Polignac number, because 11640822471 - 2¹ = 11640822469 is a prime.

It is a super-3 number, since 3×11640822471³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640822461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12680176 + ... + 12681093.

It is an arithmetic number, because the mean of its divisors is an integer number (1141257150).

Almost surely, 2^11640822471 is an apocalyptic number.

11640822471 is a deficient number, since it is larger than the sum of its proper divisors (6619291929).

11640822471 is a wasteful number, since it uses less digits than its factorization.

11640822471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25361295 (or 25361289 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 11640822471 in words is "eleven billion, six hundred forty million, eight hundred twenty-two thousand, four hundred seventy-one".