202020203690 has 16 divisors (see below), whose sum is σ = 363646247040. Its totient is φ = 80805885840.

The previous prime is 202020203687. The next prime is 202020203711. The reversal of 202020203690 is 96302020202.

It is a super-2 number, since 2×202020203690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142091 + ... + 651329.

It is an arithmetic number, because the mean of its divisors is an integer number (22727890440).

Almost surely, 2^202020203690 is an apocalyptic number.

202020203690 is a deficient number, since it is larger than the sum of its proper divisors (161626043350).

202020203690 is a wasteful number, since it uses less digits than its factorization.

202020203690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548917.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 202020203690 its reverse (96302020202), we get a palindrome (298322223892).

The spelling of 202020203690 in words is "two hundred two billion, twenty million, two hundred three thousand, six hundred ninety".