102968569959649 has 3 divisors (see below), whose sum is σ = 102968580106993. Its totient is φ = 102968559812306.

The previous prime is 102968569959643. The next prime is 102968569959691. The reversal of 102968569959649 is 946959965869201.

The square root of 102968569959649 is 10147343.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-102968569959649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102968569959649.

It is not an unprimeable number, because it can be changed into a prime (102968569959643) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5073672 + ... + 15221014.

Almost surely, 2^{102968569959649} is an apocalyptic number.

102968569959649 is the 10147343-rd square number.

102968569959649 is the 5073672-nd centered octagonal number.

It is an amenable number.

102968569959649 is a deficient number, since it is larger than the sum of its proper divisors (10147344).

102968569959649 is an frugal number, since it uses more digits than its factorization.

102968569959649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20294686 (or 10147343 counting only the distinct ones).

The product of its (nonzero) digits is 20407334400, while the sum is 88.

The spelling of 102968569959649 in words is "one hundred two trillion, nine hundred sixty-eight billion, five hundred sixty-nine million, nine hundred fifty-nine thousand, six hundred forty-nine".