99901688701 has 2 divisors, whose sum is σ = 99901688702. Its totient is φ = 99901688700.

The previous prime is 99901688683. The next prime is 99901688707. The reversal of 99901688701 is 10788610999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89086728676 + 10814960025 = 298474^2 + 103995^2 .

It is an emirp because it is prime and its reverse (10788610999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99901688701 - 2⁵ = 99901688669 is a prime.

It is a super-2 number, since 2×99901688701² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99901688707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49950844350 + 49950844351.

It is an arithmetic number, because the mean of its divisors is an integer number (49950844351).

Almost surely, 2^99901688701 is an apocalyptic number.

It is an amenable number.

99901688701 is a deficient number, since it is larger than the sum of its proper divisors (1).

99901688701 is an equidigital number, since it uses as much as digits as its factorization.

99901688701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 58.

The spelling of 99901688701 in words is "ninety-nine billion, nine hundred one million, six hundred eighty-eight thousand, seven hundred one".