99757706623 has 2 divisors, whose sum is σ = 99757706624. Its totient is φ = 99757706622.

The previous prime is 99757706611. The next prime is 99757706663. The reversal of 99757706623 is 32660775799.

It is a weak prime.

It is an emirp because it is prime and its reverse (32660775799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99757706623 - 2¹³ = 99757698431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99757706663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49878853311 + 49878853312.

It is an arithmetic number, because the mean of its divisors is an integer number (49878853312).

Almost surely, 2^99757706623 is an apocalyptic number.

99757706623 is a deficient number, since it is larger than the sum of its proper divisors (1).

99757706623 is an equidigital number, since it uses as much as digits as its factorization.

99757706623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30005640, while the sum is 61.

The spelling of 99757706623 in words is "ninety-nine billion, seven hundred fifty-seven million, seven hundred six thousand, six hundred twenty-three".