47730361621 has 2 divisors, whose sum is σ = 47730361622. Its totient is φ = 47730361620.

The previous prime is 47730361597. The next prime is 47730361669. The reversal of 47730361621 is 12616303774.

47730361621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32466994596 + 15263367025 = 180186^2 + 123545^2 .

It is a cyclic number.

It is not a de Polignac number, because 47730361621 - 2⁷ = 47730361493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47730364621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23865180810 + 23865180811.

It is an arithmetic number, because the mean of its divisors is an integer number (23865180811).

Almost surely, 2^47730361621 is an apocalyptic number.

It is an amenable number.

47730361621 is a deficient number, since it is larger than the sum of its proper divisors (1).

47730361621 is an equidigital number, since it uses as much as digits as its factorization.

47730361621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 47730361621 in words is "forty-seven billion, seven hundred thirty million, three hundred sixty-one thousand, six hundred twenty-one".