6511332853 has 4 divisors (see below), whose sum is σ = 6687314860. Its totient is φ = 6335350848.

The previous prime is 6511332791. The next prime is 6511332887. The reversal of 6511332853 is 3582331156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2648337444 + 3862995409 = 51462^2 + 62153^2 .

It is a cyclic number.

It is not a de Polignac number, because 6511332853 - 2²⁵ = 6477778421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 175981969 = 6511332853 / (6 + 5 + 1 + 1 + 3 + 3 + 2 + 8 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6511332353) 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, 87990948 + ... + 87991021.

It is an arithmetic number, because the mean of its divisors is an integer number (1671828715).

Almost surely, 2^6511332853 is an apocalyptic number.

It is an amenable number.

6511332853 is a deficient number, since it is larger than the sum of its proper divisors (175982007).

6511332853 is a wasteful number, since it uses less digits than its factorization.

6511332853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175982006.

The product of its digits is 64800, while the sum is 37.

The square root of 6511332853 is about 80692.8302453198. The cubic root of 6511332853 is about 1867.3395640618.

The spelling of 6511332853 in words is "six billion, five hundred eleven million, three hundred thirty-two thousand, eight hundred fifty-three".