99700029977 has 2 divisors, whose sum is σ = 99700029978. Its totient is φ = 99700029976.

The previous prime is 99700029971. The next prime is 99700030013. The reversal of 99700029977 is 77992000799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95888696281 + 3811333696 = 309659^2 + 61736^2 .

It is a cyclic number.

It is not a de Polignac number, because 99700029977 - 2²⁴ = 99683252761 is a prime.

It is not a weakly prime, because it can be changed into another prime (99700029971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49850014988 + 49850014989.

It is an arithmetic number, because the mean of its divisors is an integer number (49850014989).

Almost surely, 2^99700029977 is an apocalyptic number.

It is an amenable number.

99700029977 is a deficient number, since it is larger than the sum of its proper divisors (1).

99700029977 is an equidigital number, since it uses as much as digits as its factorization.

99700029977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500846, while the sum is 59.

The spelling of 99700029977 in words is "ninety-nine billion, seven hundred million, twenty-nine thousand, nine hundred seventy-seven".