99976545673 has 2 divisors, whose sum is σ = 99976545674. Its totient is φ = 99976545672.

The previous prime is 99976545619. The next prime is 99976545677. The reversal of 99976545673 is 37654567999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82338580809 + 17637964864 = 286947^2 + 132808^2 .

It is a cyclic number.

It is not a de Polignac number, because 99976545673 - 2²⁵ = 99942991241 is a prime.

It is not a weakly prime, because it can be changed into another prime (99976545677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49988272836 + 49988272837.

It is an arithmetic number, because the mean of its divisors is an integer number (49988272837).

Almost surely, 2^99976545673 is an apocalyptic number.

It is an amenable number.

99976545673 is a deficient number, since it is larger than the sum of its proper divisors (1).

99976545673 is an equidigital number, since it uses as much as digits as its factorization.

99976545673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 385786800, while the sum is 70.

The spelling of 99976545673 in words is "ninety-nine billion, nine hundred seventy-six million, five hundred forty-five thousand, six hundred seventy-three".