202135263243 has 16 divisors (see below), whose sum is σ = 270025612416. Its totient is φ = 134500970240.

The previous prime is 202135263233. The next prime is 202135263277. The reversal of 202135263243 is 342362531202.

It is a cyclic number.

It is not a de Polignac number, because 202135263243 - 2¹⁶ = 202135197707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202135263233) 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, 13874683 + ... + 13889243.

It is an arithmetic number, because the mean of its divisors is an integer number (16876600776).

Almost surely, 2^202135263243 is an apocalyptic number.

202135263243 is a deficient number, since it is larger than the sum of its proper divisors (67890349173).

202135263243 is a wasteful number, since it uses less digits than its factorization.

202135263243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23034.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 202135263243 its reverse (342362531202), we get a palindrome (544497794445).

The spelling of 202135263243 in words is "two hundred two billion, one hundred thirty-five million, two hundred sixty-three thousand, two hundred forty-three".