2101533564 has 48 divisors (see below), whose sum is σ = 5296860800. Its totient is φ = 644656320.

The previous prime is 2101533547. The next prime is 2101533601. The reversal of 2101533564 is 4653351012.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 31287 + ... + 71985.

Almost surely, 2^2101533564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101533564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2648430400).

2101533564 is an abundant number, since it is smaller than the sum of its proper divisors (3195327236).

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

2101533564 is a wasteful number, since it uses less digits than its factorization.

2101533564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41050 (or 41048 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2101533564 is about 45842.4864508896. The cubic root of 2101533564 is about 1280.8908113771.

Adding to 2101533564 its reverse (4653351012), we get a palindrome (6754884576).

The spelling of 2101533564 in words is "two billion, one hundred one million, five hundred thirty-three thousand, five hundred sixty-four".