202020037020 has 72 divisors (see below), whose sum is σ = 625832311104. Its totient is φ = 52725794688.

The previous prime is 202020036971. The next prime is 202020037027. The reversal of 202020037020 is 20730020202.

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

It is a junction number, because it is equal to n+sod(n) for n = 202020036984 and 202020037002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202020037027) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11931259 + ... + 11948178.

It is an arithmetic number, because the mean of its divisors is an integer number (8692115432).

Almost surely, 2^202020037020 is an apocalyptic number.

202020037020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202020037020 is an abundant number, since it is smaller than the sum of its proper divisors (423812274084).

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

202020037020 is a wasteful number, since it uses less digits than its factorization.

202020037020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23879499 (or 23879494 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

Adding to 202020037020 its reverse (20730020202), we get a palindrome (222750057222).

The spelling of 202020037020 in words is "two hundred two billion, twenty million, thirty-seven thousand, twenty".