6661895152 has 20 divisors (see below), whose sum is σ = 14080824216. Its totient is φ = 3028134080.

The previous prime is 6661895129. The next prime is 6661895153. The reversal of 6661895152 is 2515981666.

It is a super-2 number, since 2×6661895152² = 88761694032482206208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6661895096 and 6661895105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661895153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18925663 + ... + 18926014.

Almost surely, 2^6661895152 is an apocalyptic number.

It is an amenable number.

6661895152 is an abundant number, since it is smaller than the sum of its proper divisors (7418929064).

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

6661895152 is a wasteful number, since it uses less digits than its factorization.

6661895152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37851696 (or 37851690 counting only the distinct ones).

The product of its digits is 777600, while the sum is 49.

The square root of 6661895152 is about 81620.4334220298. The cubic root of 6661895152 is about 1881.6229338736.

The spelling of 6661895152 in words is "six billion, six hundred sixty-one million, eight hundred ninety-five thousand, one hundred fifty-two".