6547925778966 has 96 divisors (see below), whose sum is σ = 16902200689920. Its totient is φ = 1805790571200.

The previous prime is 6547925778941. The next prime is 6547925778983. The reversal of 6547925778966 is 6698775297456.

6547925778966 is a `hidden beast` number, since 6 + 5 + 479 + 2 + 5 + 7 + 7 + 89 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17731836 + ... + 18097343.

It is an arithmetic number, because the mean of its divisors is an integer number (176064590520).

Almost surely, 2^{6547925778966} is an apocalyptic number.

6547925778966 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6547925778966 is an abundant number, since it is smaller than the sum of its proper divisors (10354274910954).

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

6547925778966 is a wasteful number, since it uses less digits than its factorization.

6547925778966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35829282 (or 35829279 counting only the distinct ones).

The product of its digits is 9601804800, while the sum is 81.

The spelling of 6547925778966 in words is "six trillion, five hundred forty-seven billion, nine hundred twenty-five million, seven hundred seventy-eight thousand, nine hundred sixty-six".