6533561420 has 24 divisors (see below), whose sum is σ = 13725180000. Its totient is φ = 2612529152.

The previous prime is 6533561389. The next prime is 6533561453. The reversal of 6533561420 is 241653356.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5516 + ... + 114444.

It is an arithmetic number, because the mean of its divisors is an integer number (571882500).

Almost surely, 2^6533561420 is an apocalyptic number.

It is an amenable number.

6533561420 is an abundant number, since it is smaller than the sum of its proper divisors (7191618580).

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

6533561420 is a wasteful number, since it uses less digits than its factorization.

6533561420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111937 (or 111935 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 6533561420 is about 80830.4485945736. The cubic root of 6533561420 is about 1869.4620756319.

The spelling of 6533561420 in words is "six billion, five hundred thirty-three million, five hundred sixty-one thousand, four hundred twenty".