6516561354 has 8 divisors (see below), whose sum is σ = 13033122720. Its totient is φ = 2172187116.

The previous prime is 6516561283. The next prime is 6516561379. The reversal of 6516561354 is 4531656156.

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

6516561354 is an admirable number.

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, 543046774 + ... + 543046785.

It is an arithmetic number, because the mean of its divisors is an integer number (1629140340).

Almost surely, 2^6516561354 is an apocalyptic number.

6516561354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6516561354 is a wasteful number, since it uses less digits than its factorization.

6516561354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086093564.

The product of its digits is 324000, while the sum is 42.

The square root of 6516561354 is about 80725.2213004090. The cubic root of 6516561354 is about 1867.8392454061.

The spelling of 6516561354 in words is "six billion, five hundred sixteen million, five hundred sixty-one thousand, three hundred fifty-four".