20029537998 has 12 divisors (see below), whose sum is σ = 43397332368. Its totient is φ = 6676512660.

The previous prime is 20029537939. The next prime is 20029538027. The reversal of 20029537998 is 89973592002.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556376038 + ... + 556376073.

It is an arithmetic number, because the mean of its divisors is an integer number (3616444364).

Almost surely, 2^20029537998 is an apocalyptic number.

20029537998 is an abundant number, since it is smaller than the sum of its proper divisors (23367794370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20029537998 is a wasteful number, since it uses less digits than its factorization.

20029537998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112752119 (or 1112752116 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 20029537998 in words is "twenty billion, twenty-nine million, five hundred thirty-seven thousand, nine hundred ninety-eight".