99945346913 has 2 divisors, whose sum is σ = 99945346914. Its totient is φ = 99945346912.

The previous prime is 99945346909. The next prime is 99945346931. The reversal of 99945346913 is 31964354999.

Together with next prime (99945346931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64489586704 + 35455760209 = 253948^2 + 188297^2 .

It is a cyclic number.

It is not a de Polignac number, because 99945346913 - 2² = 99945346909 is a prime.

It is not a weakly prime, because it can be changed into another prime (99945346933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49972673456 + 49972673457.

It is an arithmetic number, because the mean of its divisors is an integer number (49972673457).

Almost surely, 2^99945346913 is an apocalyptic number.

It is an amenable number.

99945346913 is a deficient number, since it is larger than the sum of its proper divisors (1).

99945346913 is an equidigital number, since it uses as much as digits as its factorization.

99945346913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28343520, while the sum is 62.

The spelling of 99945346913 in words is "ninety-nine billion, nine hundred forty-five million, three hundred forty-six thousand, nine hundred thirteen".