47161549656 has 288 divisors, whose sum is σ = 146750994000. Its totient is φ = 13637984256.

The previous prime is 47161549609. The next prime is 47161549661. The reversal of 47161549656 is 65694516174.

47161549656 is a `hidden beast` number, since 47 + 1 + 6 + 1 + 549 + 6 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 31672560 + ... + 31674048.

Almost surely, 2^47161549656 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 47161549656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73375497000).

47161549656 is an abundant number, since it is smaller than the sum of its proper divisors (99589444344).

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

47161549656 is a wasteful number, since it uses less digits than its factorization.

47161549656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683 (or 1663 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 47161549656 in words is "forty-seven billion, one hundred sixty-one million, five hundred forty-nine thousand, six hundred fifty-six".