6561501422 has 32 divisors (see below), whose sum is σ = 11417317632. Its totient is φ = 2770015104.

The previous prime is 6561501403. The next prime is 6561501437. The reversal of 6561501422 is 2241051656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395078 + ... + 411350.

It is an arithmetic number, because the mean of its divisors is an integer number (356791176).

Almost surely, 2^6561501422 is an apocalyptic number.

6561501422 is a deficient number, since it is larger than the sum of its proper divisors (4855816210).

6561501422 is a wasteful number, since it uses less digits than its factorization.

6561501422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16712.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 6561501422 is about 81003.0951383958. The cubic root of 6561501422 is about 1872.1231304231.

The spelling of 6561501422 in words is "six billion, five hundred sixty-one million, five hundred one thousand, four hundred twenty-two".