6547751616 has 168 divisors, whose sum is σ = 20202022080. Its totient is φ = 1866213888.

The previous prime is 6547751597. The next prime is 6547751621. The reversal of 6547751616 is 6161577456.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×6547751616² = 85746102449661222912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6425155 + ... + 6426173.

Almost surely, 2^6547751616 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 6547751616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10101011040).

6547751616 is an abundant number, since it is smaller than the sum of its proper divisors (13654270464).

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

6547751616 is a wasteful number, since it uses less digits than its factorization.

6547751616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731 (or 1714 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 48.

The square root of 6547751616 is about 80918.1785262125. The cubic root of 6547751616 is about 1870.8145208173.

The spelling of 6547751616 in words is "six billion, five hundred forty-seven million, seven hundred fifty-one thousand, six hundred sixteen".