6542422636 has 6 divisors (see below), whose sum is σ = 11449239620. Its totient is φ = 3271211316.

The previous prime is 6542422619. The next prime is 6542422639. The reversal of 6542422636 is 6362242456.

It is not an unprimeable number, because it can be changed into a prime (6542422639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817802826 + ... + 817802833.

Almost surely, 2^6542422636 is an apocalyptic number.

It is an amenable number.

6542422636 is a deficient number, since it is larger than the sum of its proper divisors (4906816984).

6542422636 is a wasteful number, since it uses less digits than its factorization.

6542422636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635605663 (or 1635605661 counting only the distinct ones).

The product of its digits is 414720, while the sum is 40.

The square root of 6542422636 is about 80885.2436232963. The cubic root of 6542422636 is about 1870.3068534739.

The spelling of 6542422636 in words is "six billion, five hundred forty-two million, four hundred twenty-two thousand, six hundred thirty-six".