61482516521 has 2 divisors, whose sum is σ = 61482516522. Its totient is φ = 61482516520.

The previous prime is 61482516467. The next prime is 61482516547. The reversal of 61482516521 is 12561528416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48956430121 + 12526086400 = 221261^2 + 111920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61482516521 is a prime.

It is not a weakly prime, because it can be changed into another prime (61482519521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30741258260 + 30741258261.

It is an arithmetic number, because the mean of its divisors is an integer number (30741258261).

Almost surely, 2^61482516521 is an apocalyptic number.

It is an amenable number.

61482516521 is a deficient number, since it is larger than the sum of its proper divisors (1).

61482516521 is an equidigital number, since it uses as much as digits as its factorization.

61482516521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 41.

The spelling of 61482516521 in words is "sixty-one billion, four hundred eighty-two million, five hundred sixteen thousand, five hundred twenty-one".