6661553050 has 24 divisors (see below), whose sum is σ = 12485084832. Its totient is φ = 2644278000.

The previous prime is 6661553039. The next prime is 6661553053. The reversal of 6661553050 is 503551666.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6661553053) 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, 501966 + ... + 515065.

It is an arithmetic number, because the mean of its divisors is an integer number (520211868).

Almost surely, 2^6661553050 is an apocalyptic number.

6661553050 is a deficient number, since it is larger than the sum of its proper divisors (5823531782).

6661553050 is a wasteful number, since it uses less digits than its factorization.

6661553050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017174 (or 1017169 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 6661553050 is about 81618.3377066698. The cubic root of 6661553050 is about 1881.5907249214.

The spelling of 6661553050 in words is "six billion, six hundred sixty-one million, five hundred fifty-three thousand, fifty".