99174552881 has 2 divisors, whose sum is σ = 99174552882. Its totient is φ = 99174552880.

The previous prime is 99174552809. The next prime is 99174552899. The reversal of 99174552881 is 18825547199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89765552881 + 9409000000 = 299609^2 + 97000^2 .

It is an emirp because it is prime and its reverse (18825547199) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99174552881 is a prime.

It is a super-2 number, since 2×99174552881² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99174552881.

It is not a weakly prime, because it can be changed into another prime (99174552481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49587276440 + 49587276441.

It is an arithmetic number, because the mean of its divisors is an integer number (49587276441).

Almost surely, 2^99174552881 is an apocalyptic number.

It is an amenable number.

99174552881 is a deficient number, since it is larger than the sum of its proper divisors (1).

99174552881 is an equidigital number, since it uses as much as digits as its factorization.

99174552881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7257600, while the sum is 59.

The spelling of 99174552881 in words is "ninety-nine billion, one hundred seventy-four million, five hundred fifty-two thousand, eight hundred eighty-one".