6542206452 has 18 divisors (see below), whose sum is σ = 16537244178. Its totient is φ = 2180735472.

The previous prime is 6542206439. The next prime is 6542206459. The reversal of 6542206452 is 2546022456.

6542206452 is a `hidden beast` number, since 6 + 5 + 4 + 2 + 2 + 0 + 645 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4082443236 + 2459763216 = 63894^2 + 49596^2 .

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: 181727957 = 6542206452 / (6 + 5 + 4 + 2 + 2 + 0 + 6 + 4 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542206459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90863943 + ... + 90864014.

Almost surely, 2^6542206452 is an apocalyptic number.

It is an amenable number.

6542206452 is an abundant number, since it is smaller than the sum of its proper divisors (9995037726).

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

6542206452 is a wasteful number, since it uses less digits than its factorization.

6542206452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181727967 (or 181727962 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 6542206452 is about 80883.9072498356. The cubic root of 6542206452 is about 1870.2862528039.

The spelling of 6542206452 in words is "six billion, five hundred forty-two million, two hundred six thousand, four hundred fifty-two".