6651525944 has 64 divisors (see below), whose sum is σ = 15304412160. Its totient is φ = 2645153280.

The previous prime is 6651525941. The next prime is 6651525967. The reversal of 6651525944 is 4495251566.

It is a super-2 number, since 2×6651525944² = 88485594767410182272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651525941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18389 + ... + 116795.

It is an arithmetic number, because the mean of its divisors is an integer number (239131440).

Almost surely, 2^6651525944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6651525944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7652206080).

6651525944 is an abundant number, since it is smaller than the sum of its proper divisors (8652886216).

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

6651525944 is a wasteful number, since it uses less digits than its factorization.

6651525944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98508 (or 98504 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 47.

The square root of 6651525944 is about 81556.8877777959. The cubic root of 6651525944 is about 1880.6461812233.

The spelling of 6651525944 in words is "six billion, six hundred fifty-one million, five hundred twenty-five thousand, nine hundred forty-four".