99645400001 has 4 divisors (see below), whose sum is σ = 113880457152. Its totient is φ = 85410342852.

The previous prime is 99645399991. The next prime is 99645400067. The reversal of 99645400001 is 10000454699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99645400001 is a prime.

It is a super-3 number, since 3×99645400001³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99645400081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7117528565 + ... + 7117528578.

It is an arithmetic number, because the mean of its divisors is an integer number (28470114288).

Almost surely, 2^99645400001 is an apocalyptic number.

It is an amenable number.

99645400001 is a deficient number, since it is larger than the sum of its proper divisors (14235057151).

99645400001 is a wasteful number, since it uses less digits than its factorization.

99645400001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14235057150.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 99645400001 in words is "ninety-nine billion, six hundred forty-five million, four hundred thousand, one".