20097000000 has 1176 divisors, whose sum is σ = 92867561280. Its totient is φ = 4032000000.

The previous prime is 20096999983. The next prime is 20097000043. The reversal of 20097000000 is 79002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 692999986 + ... + 693000014.

Almost surely, 2^20097000000 is an apocalyptic number.

20097000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20097000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46433780640).

20097000000 is an abundant number, since it is smaller than the sum of its proper divisors (72770561280).

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

20097000000 is an equidigital number, since it uses as much as digits as its factorization.

20097000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

Adding to 20097000000 its reverse (79002), we get a palindrome (20097079002).

The spelling of 20097000000 in words is "twenty billion, ninety-seven million", and thus it is an aban number and an uban number.