6533578338 has 32 divisors (see below), whose sum is σ = 14953850880. Its totient is φ = 1864242000.

The previous prime is 6533578333. The next prime is 6533578351. The reversal of 6533578338 is 8338753356.

It is not an unprimeable number, because it can be changed into a prime (6533578333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72028 + ... + 135111.

It is an arithmetic number, because the mean of its divisors is an integer number (467307840).

Almost surely, 2^6533578338 is an apocalyptic number.

6533578338 is an abundant number, since it is smaller than the sum of its proper divisors (8420272542).

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

6533578338 is a wasteful number, since it uses less digits than its factorization.

6533578338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207902.

The product of its digits is 5443200, while the sum is 51.

The square root of 6533578338 is about 80830.5532456632. The cubic root of 6533578338 is about 1869.4636892251.

The spelling of 6533578338 in words is "six billion, five hundred thirty-three million, five hundred seventy-eight thousand, three hundred thirty-eight".