2536133721 has 8 divisors (see below), whose sum is σ = 3688921824. Its totient is φ = 1537050720.

The previous prime is 2536133711. The next prime is 2536133741. The reversal of 2536133721 is 1273316352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2536133721 - 2⁹ = 2536133209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 76852537 = 2536133721 / (2 + 5 + 3 + 6 + 1 + 3 + 3 + 7 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (2536133711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38426236 + ... + 38426301.

It is an arithmetic number, because the mean of its divisors is an integer number (461115228).

Almost surely, 2^2536133721 is an apocalyptic number.

It is an amenable number.

2536133721 is a deficient number, since it is larger than the sum of its proper divisors (1152788103).

2536133721 is a wasteful number, since it uses less digits than its factorization.

2536133721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76852551.

The product of its digits is 22680, while the sum is 33.

The square root of 2536133721 is about 50360.0409153924. The cubic root of 2536133721 is about 1363.7163566072.

The spelling of 2536133721 in words is "two billion, five hundred thirty-six million, one hundred thirty-three thousand, seven hundred twenty-one".