202020516651 has 16 divisors (see below), whose sum is σ = 285405963264. Its totient is φ = 126668847744.

The previous prime is 202020516647. The next prime is 202020516661. The reversal of 202020516651 is 156615020202.

It is not a de Polignac number, because 202020516651 - 2² = 202020516647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202020516661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1319271 + ... + 1464416.

It is an arithmetic number, because the mean of its divisors is an integer number (17837872704).

Almost surely, 2^202020516651 is an apocalyptic number.

202020516651 is a deficient number, since it is larger than the sum of its proper divisors (83385446613).

202020516651 is a wasteful number, since it uses less digits than its factorization.

202020516651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785130.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 202020516651 its reverse (156615020202), we get a palindrome (358635536853).

The spelling of 202020516651 in words is "two hundred two billion, twenty million, five hundred sixteen thousand, six hundred fifty-one".