6366915772 has 24 divisors (see below), whose sum is σ = 12738345984. Its totient is φ = 2727710832.

The previous prime is 6366915761. The next prime is 6366915773. The reversal of 6366915772 is 2775196636.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6366915773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43113 + ... + 120799.

It is an arithmetic number, because the mean of its divisors is an integer number (530764416).

Almost surely, 2^6366915772 is an apocalyptic number.

It is an amenable number.

6366915772 is an abundant number, since it is smaller than the sum of its proper divisors (6371430212).

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

6366915772 is a wasteful number, since it uses less digits than its factorization.

6366915772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80625 (or 80623 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 52.

The square root of 6366915772 is about 79792.9556539924. The cubic root of 6366915772 is about 1853.4307676838.

The spelling of 6366915772 in words is "six billion, three hundred sixty-six million, nine hundred fifteen thousand, seven hundred seventy-two".