6533728772 has 12 divisors (see below), whose sum is σ = 11931157056. Its totient is φ = 3124826760.

The previous prime is 6533728757. The next prime is 6533728807. The reversal of 6533728772 is 2778273356.

It is a super-2 number, since 2×6533728772² = 85379223332121255968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6533728772.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35509304 + ... + 35509487.

It is an arithmetic number, because the mean of its divisors is an integer number (994263088).

Almost surely, 2^6533728772 is an apocalyptic number.

It is an amenable number.

6533728772 is a deficient number, since it is larger than the sum of its proper divisors (5397428284).

6533728772 is a wasteful number, since it uses less digits than its factorization.

6533728772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71018818 (or 71018816 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 50.

The square root of 6533728772 is about 80831.4837918988. The cubic root of 6533728772 is about 1869.4780370923.

The spelling of 6533728772 in words is "six billion, five hundred thirty-three million, seven hundred twenty-eight thousand, seven hundred seventy-two".