6639422495 has 8 divisors (see below), whose sum is σ = 7969295184. Its totient is φ = 5310212544.

The previous prime is 6639422483. The next prime is 6639422501. The reversal of 6639422495 is 5942249366.

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

It is a cyclic number.

It is not a de Polignac number, because 6639422495 - 2⁴ = 6639422479 is a prime.

It is a super-2 number, since 2×6639422495² = 88163862134224050050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143369 + ... + 183938.

It is an arithmetic number, because the mean of its divisors is an integer number (996161898).

Almost surely, 2^6639422495 is an apocalyptic number.

6639422495 is a deficient number, since it is larger than the sum of its proper divisors (1329872689).

6639422495 is a wasteful number, since it uses less digits than its factorization.

6639422495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331369.

The product of its digits is 2799360, while the sum is 50.

The square root of 6639422495 is about 81482.6514971132. The cubic root of 6639422495 is about 1879.5047827040.

The spelling of 6639422495 in words is "six billion, six hundred thirty-nine million, four hundred twenty-two thousand, four hundred ninety-five".