47621121644 has 6 divisors (see below), whose sum is σ = 83336962884. Its totient is φ = 23810560820.

The previous prime is 47621121641. The next prime is 47621121671. The reversal of 47621121644 is 44612112674.

It is a junction number, because it is equal to n+sod(n) for n = 47621121598 and 47621121607.

It is not an unprimeable number, because it can be changed into a prime (47621121641) by changing a digit.

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 as a sum of consecutive naturals, namely, 5952640202 + ... + 5952640209.

It is an arithmetic number, because the mean of its divisors is an integer number (13889493814).

Almost surely, 2^47621121644 is an apocalyptic number.

It is an amenable number.

47621121644 is a deficient number, since it is larger than the sum of its proper divisors (35715841240).

47621121644 is a wasteful number, since it uses less digits than its factorization.

47621121644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11905280415 (or 11905280413 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The spelling of 47621121644 in words is "forty-seven billion, six hundred twenty-one million, one hundred twenty-one thousand, six hundred forty-four".