6551565672 has 32 divisors (see below), whose sum is σ = 17342380800. Its totient is φ = 2055393024.

The previous prime is 6551565667. The next prime is 6551565673. The reversal of 6551565672 is 2765651556.

It is a happy number.

It is a super-3 number, since 3×6551565672³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6551565673) 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, 8028472 + ... + 8029287.

It is an arithmetic number, because the mean of its divisors is an integer number (541949400).

Almost surely, 2^6551565672 is an apocalyptic number.

It is an amenable number.

6551565672 is an abundant number, since it is smaller than the sum of its proper divisors (10790815128).

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

6551565672 is a wasteful number, since it uses less digits than its factorization.

6551565672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16057785 (or 16057781 counting only the distinct ones).

The product of its digits is 1890000, while the sum is 48.

The square root of 6551565672 is about 80941.7424571525. The cubic root of 6551565672 is about 1871.1776992416.

The spelling of 6551565672 in words is "six billion, five hundred fifty-one million, five hundred sixty-five thousand, six hundred seventy-two".