2140521536 has 28 divisors (see below), whose sum is σ = 4249087260. Its totient is φ = 1069885440.

The previous prime is 2140521533. The next prime is 2140521557. The reversal of 2140521536 is 6351250412.

It can be written as a sum of positive squares in 2 ways, for example, as 1561830400 + 578691136 = 39520^2 + 24056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2140521499 and 2140521508.

It is not an unprimeable number, because it can be changed into a prime (2140521533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309476 + ... + 316316.

Almost surely, 2^2140521536 is an apocalyptic number.

It is an amenable number.

2140521536 is a deficient number, since it is larger than the sum of its proper divisors (2108565724).

2140521536 is an equidigital number, since it uses as much as digits as its factorization.

2140521536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11742 (or 11732 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2140521536 is about 46265.7706733607. The cubic root of 2140521536 is about 1288.7634196972.

Adding to 2140521536 its reverse (6351250412), we get a palindrome (8491771948).

The spelling of 2140521536 in words is "two billion, one hundred forty million, five hundred twenty-one thousand, five hundred thirty-six".