99669777253 has 2 divisors, whose sum is σ = 99669777254. Its totient is φ = 99669777252.

The previous prime is 99669777247. The next prime is 99669777313. The reversal of 99669777253 is 35277796699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74211021889 + 25458755364 = 272417^2 + 159558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99669777253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99669777653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49834888626 + 49834888627.

It is an arithmetic number, because the mean of its divisors is an integer number (49834888627).

Almost surely, 2^99669777253 is an apocalyptic number.

It is an amenable number.

99669777253 is a deficient number, since it is larger than the sum of its proper divisors (1).

99669777253 is an equidigital number, since it uses as much as digits as its factorization.

99669777253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270050760, while the sum is 70.

The spelling of 99669777253 in words is "ninety-nine billion, six hundred sixty-nine million, seven hundred seventy-seven thousand, two hundred fifty-three".