11643251652 has 108 divisors (see below), whose sum is σ = 31559870160. Its totient is φ = 3618300672.

The previous prime is 11643251651. The next prime is 11643251657. The reversal of 11643251652 is 25615234611.

11643251652 is a `hidden beast` number, since 1 + 1 + 64 + 32 + 516 + 52 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (11643251651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1107999 + ... + 1118457.

It is an arithmetic number, because the mean of its divisors is an integer number (292221020).

Almost surely, 2^11643251652 is an apocalyptic number.

11643251652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11643251652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15779935080).

11643251652 is an abundant number, since it is smaller than the sum of its proper divisors (19916618508).

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

11643251652 is a wasteful number, since it uses less digits than its factorization.

11643251652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10610 (or 10588 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 11643251652 in words is "eleven billion, six hundred forty-three million, two hundred fifty-one thousand, six hundred fifty-two".