20002371002820 has 96 divisors (see below), whose sum is σ = 62332119628800. Its totient is φ = 5325178090752.

The previous prime is 20002371002797. The next prime is 20002371002837. The reversal of 20002371002820 is 2820017320002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30184105 + ... + 30839664.

It is an arithmetic number, because the mean of its divisors is an integer number (649292912800).

Almost surely, 2^{20002371002820} is an apocalyptic number.

20002371002820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002371002820 is an abundant number, since it is smaller than the sum of its proper divisors (42329748625980).

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

20002371002820 is a wasteful number, since it uses less digits than its factorization.

20002371002820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61024394 (or 61024386 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 20002371002820 its reverse (2820017320002), we get a palindrome (22822388322822).

The spelling of 20002371002820 in words is "twenty trillion, two billion, three hundred seventy-one million, two thousand, eight hundred twenty".