20034431998 has 16 divisors (see below), whose sum is σ = 34348785120. Its totient is φ = 8585174016.

The previous prime is 20034431987. The next prime is 20034432001. The reversal of 20034431998 is 89913443002.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 45790 + ... + 205342.

It is an arithmetic number, because the mean of its divisors is an integer number (2146799070).

Almost surely, 2^20034431998 is an apocalyptic number.

20034431998 is a deficient number, since it is larger than the sum of its proper divisors (14314353122).

20034431998 is a wasteful number, since it uses less digits than its factorization.

20034431998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168531.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 20034431998 in words is "twenty billion, thirty-four million, four hundred thirty-one thousand, nine hundred ninety-eight".