47030511721 has 2 divisors, whose sum is σ = 47030511722. Its totient is φ = 47030511720.

The previous prime is 47030511701. The next prime is 47030511763. The reversal of 47030511721 is 12711503074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45640340496 + 1390171225 = 213636^2 + 37285^2 .

It is a cyclic number.

It is not a de Polignac number, because 47030511721 - 2²¹ = 47028414569 is a prime.

It is not a weakly prime, because it can be changed into another prime (47030511701) 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 as a sum of consecutive naturals, namely, 23515255860 + 23515255861.

It is an arithmetic number, because the mean of its divisors is an integer number (23515255861).

Almost surely, 2^47030511721 is an apocalyptic number.

It is an amenable number.

47030511721 is a deficient number, since it is larger than the sum of its proper divisors (1).

47030511721 is an equidigital number, since it uses as much as digits as its factorization.

47030511721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 31.

The spelling of 47030511721 in words is "forty-seven billion, thirty million, five hundred eleven thousand, seven hundred twenty-one".