20000002000 has 80 divisors (see below), whose sum is σ = 52756426944. Its totient is φ = 7272720000.

The previous prime is 20000001971. The next prime is 20000002021. The reversal of 20000002000 is 20000002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (4).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432546 + ... + 476545.

Almost surely, 2^20000002000 is an apocalyptic number.

20000002000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000002000 is an abundant number, since it is smaller than the sum of its proper divisors (32756424944).

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

20000002000 is a wasteful number, since it uses less digits than its factorization.

20000002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909125 (or 909109 counting only the distinct ones).

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

Adding to 20000002000 its reverse (20000002), we get a palindrome (20020002002).

20000002000 divided by its reverse (20000002) gives a cube (1000 = 10³).

The spelling of 20000002000 in words is "twenty billion, two thousand".