90190019009999 has 4 divisors (see below), whose sum is σ = 90384813867936. Its totient is φ = 89995224152064.

The previous prime is 90190019009957. The next prime is 90190019010023. The reversal of 90190019009999 is 99990091009109.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90190019009999 - 2¹² = 90190019005903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90190019009929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97397428274 + ... + 97397429199.

It is an arithmetic number, because the mean of its divisors is an integer number (22596203466984).

Almost surely, 2^{90190019009999} is an apocalyptic number.

90190019009999 is a deficient number, since it is larger than the sum of its proper divisors (194794857937).

90190019009999 is a wasteful number, since it uses less digits than its factorization.

90190019009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194794857936.

The product of its (nonzero) digits is 4782969, while the sum is 65.

The spelling of 90190019009999 in words is "ninety trillion, one hundred ninety billion, nineteen million, nine thousand, nine hundred ninety-nine".