99380548961 has 2 divisors, whose sum is σ = 99380548962. Its totient is φ = 99380548960.

The previous prime is 99380548937. The next prime is 99380548963. The reversal of 99380548961 is 16984508399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75545820736 + 23834728225 = 274856^2 + 154385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99380548961 is a prime.

Together with 99380548963, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99380548894 and 99380548903.

It is not a weakly prime, because it can be changed into another prime (99380548963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49690274480 + 49690274481.

It is an arithmetic number, because the mean of its divisors is an integer number (49690274481).

Almost surely, 2^99380548961 is an apocalyptic number.

It is an amenable number.

99380548961 is a deficient number, since it is larger than the sum of its proper divisors (1).

99380548961 is an equidigital number, since it uses as much as digits as its factorization.

99380548961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16796160, while the sum is 62.

The spelling of 99380548961 in words is "ninety-nine billion, three hundred eighty million, five hundred forty-eight thousand, nine hundred sixty-one".