10002020000 has 120 divisors (see below), whose sum is σ = 28122073056. Its totient is φ = 3429216000.

The previous prime is 10002019981. The next prime is 10002020003. The reversal of 10002020000 is 2020001.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is not an unprimeable number, because it can be changed into a prime (10002020003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 104279 + ... + 175721.

Almost surely, 2^10002020000 is an apocalyptic number.

10002020000 is a gapful number since it is divisible by the number (10) 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 10002020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14061036528).

10002020000 is an abundant number, since it is smaller than the sum of its proper divisors (18120053056).

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

10002020000 is an frugal number, since it uses more digits than its factorization.

10002020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71480 (or 71457 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

Adding to 10002020000 its reverse (2020001), we get a palindrome (10004040001).

Subtracting from 10002020000 its reverse (2020001), we obtain a palindrome (9999999999).

The spelling of 10002020000 in words is "ten billion, two million, twenty thousand".