2121652536 has 16 divisors (see below), whose sum is σ = 5304131400. Its totient is φ = 707217504.

The previous prime is 2121652517. The next prime is 2121652541. The reversal of 2121652536 is 6352561212.

It is a junction number, because it is equal to n+sod(n) for n = 2121652497 and 2121652506.

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 3 ways as a sum of consecutive naturals, for example, 44201071 + ... + 44201118.

Almost surely, 2^2121652536 is an apocalyptic number.

It is an amenable number.

2121652536 is an abundant number, since it is smaller than the sum of its proper divisors (3182478864).

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

2121652536 is a wasteful number, since it uses less digits than its factorization.

2121652536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88402198 (or 88402194 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 2121652536 is about 46061.3996313616. The cubic root of 2121652536 is about 1284.9653603384.

The spelling of 2121652536 in words is "two billion, one hundred twenty-one million, six hundred fifty-two thousand, five hundred thirty-six".