6536822004 has 18 divisors (see below), whose sum is σ = 16523633490. Its totient is φ = 2178940656.

The previous prime is 6536821981. The next prime is 6536822023. The reversal of 6536822004 is 4002286356.

It can be written as a sum of positive squares in only one way, i.e., 6480572004 + 56250000 = 80502^2 + 7500^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 181578389 = 6536822004 / (6 + 5 + 3 + 6 + 8 + 2 + 2 + 0 + 0 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 6536822004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90789159 + ... + 90789230.

Almost surely, 2^6536822004 is an apocalyptic number.

It is an amenable number.

6536822004 is an abundant number, since it is smaller than the sum of its proper divisors (9986811486).

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

6536822004 is a wasteful number, since it uses less digits than its factorization.

6536822004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181578399 (or 181578394 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 6536822004 is about 80850.6153594393. The cubic root of 6536822004 is about 1869.7730099001.

The spelling of 6536822004 in words is "six billion, five hundred thirty-six million, eight hundred twenty-two thousand, four".