201620533156 has 24 divisors (see below), whose sum is σ = 404364320640. Its totient is φ = 86168102592.

The previous prime is 201620533141. The next prime is 201620533157. The reversal of 201620533156 is 651335026102.

It is not an unprimeable number, because it can be changed into a prime (201620533157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10018825 + ... + 10038928.

It is an arithmetic number, because the mean of its divisors is an integer number (16848513360).

Almost surely, 2^201620533156 is an apocalyptic number.

It is an amenable number.

201620533156 is an abundant number, since it is smaller than the sum of its proper divisors (202743787484).

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

201620533156 is a wasteful number, since it uses less digits than its factorization.

201620533156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20058123 (or 20058121 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 201620533156 its reverse (651335026102), we get a palindrome (852955559258).

The spelling of 201620533156 in words is "two hundred one billion, six hundred twenty million, five hundred thirty-three thousand, one hundred fifty-six".