6536689145 has 16 divisors (see below), whose sum is σ = 8967898368. Its totient is φ = 4480653120.

The previous prime is 6536689139. The next prime is 6536689147. The reversal of 6536689145 is 5419866356.

It is a happy number.

It is not a de Polignac number, because 6536689145 - 2²⁸ = 6268253689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6536689147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66380 + ... + 132210.

It is an arithmetic number, because the mean of its divisors is an integer number (560493648).

Almost surely, 2^6536689145 is an apocalyptic number.

It is an amenable number.

6536689145 is a deficient number, since it is larger than the sum of its proper divisors (2431209223).

6536689145 is a wasteful number, since it uses less digits than its factorization.

6536689145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68680.

The product of its digits is 4665600, while the sum is 53.

The square root of 6536689145 is about 80849.7937226806. The cubic root of 6536689145 is about 1869.7603422840.

The spelling of 6536689145 in words is "six billion, five hundred thirty-six million, six hundred eighty-nine thousand, one hundred forty-five".