47212161756 has 48 divisors (see below), whose sum is σ = 110828256000. Its totient is φ = 15642329472.

The previous prime is 47212161751. The next prime is 47212161767. The reversal of 47212161756 is 65716121274.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47212161751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2457235 + ... + 2476373.

It is an arithmetic number, because the mean of its divisors is an integer number (2308922000).

Almost surely, 2^47212161756 is an apocalyptic number.

It is an amenable number.

47212161756 is an abundant number, since it is smaller than the sum of its proper divisors (63616094244).

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

47212161756 is a wasteful number, since it uses less digits than its factorization.

47212161756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20378 (or 20376 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The spelling of 47212161756 in words is "forty-seven billion, two hundred twelve million, one hundred sixty-one thousand, seven hundred fifty-six".