6547342881 has 8 divisors (see below), whose sum is σ = 8965730944. Its totient is φ = 4246925040.

The previous prime is 6547342873. The next prime is 6547342883. The reversal of 6547342881 is 1882437456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6547342881 - 2³ = 6547342873 is a prime.

It is a super-2 number, since 2×6547342881² = 85735397602762760322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6547342881.

It is not an unprimeable number, because it can be changed into a prime (6547342883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29492425 + ... + 29492646.

It is an arithmetic number, because the mean of its divisors is an integer number (1120716368).

Almost surely, 2^6547342881 is an apocalyptic number.

It is an amenable number.

6547342881 is a deficient number, since it is larger than the sum of its proper divisors (2418388063).

6547342881 is a wasteful number, since it uses less digits than its factorization.

6547342881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58985111.

The product of its digits is 1290240, while the sum is 48.

The square root of 6547342881 is about 80915.6528800207. The cubic root of 6547342881 is about 1870.7755922746.

The spelling of 6547342881 in words is "six billion, five hundred forty-seven million, three hundred forty-two thousand, eight hundred eighty-one".