11217371652 has 36 divisors (see below), whose sum is σ = 28358477056. Its totient is φ = 3738668400.

The previous prime is 11217371629. The next prime is 11217371723. The reversal of 11217371652 is 25617371211.

11217371652 is a `hidden beast` number, since 11 + 217 + 371 + 65 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 419277 + ... + 445227.

Almost surely, 2^11217371652 is an apocalyptic number.

11217371652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11217371652 is an abundant number, since it is smaller than the sum of its proper divisors (17141105404).

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

11217371652 is a wasteful number, since it uses less digits than its factorization.

11217371652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37968 (or 37963 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The spelling of 11217371652 in words is "eleven billion, two hundred seventeen million, three hundred seventy-one thousand, six hundred fifty-two".