6947951616 has 132 divisors (see below), whose sum is σ = 21118489600. Its totient is φ = 2194034688.

The previous prime is 6947951611. The next prime is 6947951617. The reversal of 6947951616 is 6161597496.

It is a happy number.

6947951616 is a `hidden beast` number, since 6 + 9 + 479 + 5 + 161 + 6 = 666.

It is a super-2 number, since 2×6947951616² = 96548063316554022912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6947951611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155265 + ... + 194943.

Almost surely, 2^6947951616 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 6947951616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10559244800).

6947951616 is an abundant number, since it is smaller than the sum of its proper divisors (14170537984).

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

6947951616 is a wasteful number, since it uses less digits than its factorization.

6947951616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39724 (or 39703 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 6947951616 is about 83354.3737064829. The cubic root of 6947951616 is about 1908.1781936076.

The spelling of 6947951616 in words is "six billion, nine hundred forty-seven million, nine hundred fifty-one thousand, six hundred sixteen".