99570753977 has 2 divisors, whose sum is σ = 99570753978. Its totient is φ = 99570753976.

The previous prime is 99570753797. The next prime is 99570754027. The reversal of 99570753977 is 77935707599.

Together with previous prime (99570753797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66747822736 + 32822931241 = 258356^2 + 181171^2 .

It is a cyclic number.

It is not a de Polignac number, because 99570753977 - 2²⁰ = 99569705401 is a prime.

It is a super-2 number, since 2×99570753977² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99570753277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49785376988 + 49785376989.

It is an arithmetic number, because the mean of its divisors is an integer number (49785376989).

Almost surely, 2^99570753977 is an apocalyptic number.

It is an amenable number.

99570753977 is a deficient number, since it is larger than the sum of its proper divisors (1).

99570753977 is an equidigital number, since it uses as much as digits as its factorization.

99570753977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131274675, while the sum is 68.

The spelling of 99570753977 in words is "ninety-nine billion, five hundred seventy million, seven hundred fifty-three thousand, nine hundred seventy-seven".