6518221083 has 12 divisors (see below), whose sum is σ = 10271136408. Its totient is φ = 3950436960.

The previous prime is 6518221081. The next prime is 6518221109. The reversal of 6518221083 is 3801228156.

It is a happy number.

It is not a de Polignac number, because 6518221083 - 2¹ = 6518221081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6518221081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32920210 + ... + 32920407.

It is an arithmetic number, because the mean of its divisors is an integer number (855928034).

Almost surely, 2^6518221083 is an apocalyptic number.

6518221083 is a deficient number, since it is larger than the sum of its proper divisors (3752915325).

6518221083 is a wasteful number, since it uses less digits than its factorization.

6518221083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65840634 (or 65840631 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 6518221083 is about 80735.5007601984. The cubic root of 6518221083 is about 1867.9978077540.

The spelling of 6518221083 in words is "six billion, five hundred eighteen million, two hundred twenty-one thousand, eighty-three".