202026252261 has 8 divisors (see below), whose sum is σ = 269375098720. Its totient is φ = 134680786992.

The previous prime is 202026252257. The next prime is 202026252313. The reversal of 202026252261 is 162252620202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202026252261 - 2² = 202026252257 is a prime.

It is a super-2 number, since 2×202026252261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202026252221) 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, 702430 + ... + 947343.

It is an arithmetic number, because the mean of its divisors is an integer number (33671887340).

Almost surely, 2^202026252261 is an apocalyptic number.

It is an amenable number.

202026252261 is a deficient number, since it is larger than the sum of its proper divisors (67348846459).

202026252261 is a wasteful number, since it uses less digits than its factorization.

202026252261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690595.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 202026252261 its reverse (162252620202), we get a palindrome (364278872463).

The spelling of 202026252261 in words is "two hundred two billion, twenty-six million, two hundred fifty-two thousand, two hundred sixty-one".