47628587521 has 2 divisors, whose sum is σ = 47628587522. Its totient is φ = 47628587520.

The previous prime is 47628587509. The next prime is 47628587543. The reversal of 47628587521 is 12578582674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47311035121 + 317552400 = 217511^2 + 17820^2 .

It is a cyclic number.

It is not a de Polignac number, because 47628587521 - 2⁹ = 47628587009 is a prime.

It is not a weakly prime, because it can be changed into another prime (47628587561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23814293760 + 23814293761.

It is an arithmetic number, because the mean of its divisors is an integer number (23814293761).

Almost surely, 2^47628587521 is an apocalyptic number.

It is an amenable number.

47628587521 is a deficient number, since it is larger than the sum of its proper divisors (1).

47628587521 is an equidigital number, since it uses as much as digits as its factorization.

47628587521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7526400, while the sum is 55.

The spelling of 47628587521 in words is "forty-seven billion, six hundred twenty-eight million, five hundred eighty-seven thousand, five hundred twenty-one".