99219643401 has 16 divisors (see below), whose sum is σ = 132679624896. Its totient is φ = 65953245696.

The previous prime is 99219643399. The next prime is 99219643441. The reversal of 99219643401 is 10434691299.

It is a happy number.

It is not a de Polignac number, because 99219643401 - 2¹ = 99219643399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99219643441) 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 in 15 ways as a sum of consecutive naturals, for example, 2039901 + ... + 2087973.

It is an arithmetic number, because the mean of its divisors is an integer number (8292476556).

Almost surely, 2^99219643401 is an apocalyptic number.

It is an amenable number.

99219643401 is a deficient number, since it is larger than the sum of its proper divisors (33459981495).

99219643401 is a wasteful number, since it uses less digits than its factorization.

99219643401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50072.

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 99219643401 in words is "ninety-nine billion, two hundred nineteen million, six hundred forty-three thousand, four hundred one".