102968147521 has 2 divisors, whose sum is σ = 102968147522. Its totient is φ = 102968147520.

The previous prime is 102968147497. The next prime is 102968147549. The reversal of 102968147521 is 125741869201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81787420225 + 21180727296 = 285985^2 + 145536^2 .

It is a cyclic number.

It is not a de Polignac number, because 102968147521 - 2⁷ = 102968147393 is a prime.

It is not a weakly prime, because it can be changed into another prime (102968147551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51484073760 + 51484073761.

It is an arithmetic number, because the mean of its divisors is an integer number (51484073761).

Almost surely, 2^102968147521 is an apocalyptic number.

It is an amenable number.

102968147521 is a deficient number, since it is larger than the sum of its proper divisors (1).

102968147521 is an equidigital number, since it uses as much as digits as its factorization.

102968147521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 102968147521 in words is "one hundred two billion, nine hundred sixty-eight million, one hundred forty-seven thousand, five hundred twenty-one".