202201641636261 has 8 divisors (see below), whose sum is σ = 269627011853664. Its totient is φ = 134788682921520.

The previous prime is 202201641636259. The next prime is 202201641636271. The reversal of 202201641636261 is 162636146102202.

It is a happy number.

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

It is not a de Polignac number, because 202201641636261 - 2¹ = 202201641636259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201641636271) 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, 3102837651 + ... + 3102902816.

It is an arithmetic number, because the mean of its divisors is an integer number (33703376481708).

Almost surely, 2^{202201641636261} is an apocalyptic number.

It is an amenable number.

202201641636261 is a deficient number, since it is larger than the sum of its proper divisors (67425370217403).

202201641636261 is a wasteful number, since it uses less digits than its factorization.

202201641636261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6205751331.

The product of its (nonzero) digits is 248832, while the sum is 42.

Adding to 202201641636261 its reverse (162636146102202), we get a palindrome (364837787738463).

The spelling of 202201641636261 in words is "two hundred two trillion, two hundred one billion, six hundred forty-one million, six hundred thirty-six thousand, two hundred sixty-one".