263673640341 has 32 divisors (see below), whose sum is σ = 392355815040. Its totient is φ = 175005360000.

The previous prime is 263673640327. The next prime is 263673640367. The reversal of 263673640341 is 143046376362.

263673640341 is a `hidden beast` number, since 2 + 636 + 7 + 3 + 6 + 4 + 0 + 3 + 4 + 1 = 666.

It is not a de Polignac number, because 263673640341 - 2²² = 263669446037 is a prime.

It is a super-3 number, since 3×263673640341³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263673640141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18378831 + ... + 18393171.

It is an arithmetic number, because the mean of its divisors is an integer number (12261119220).

Almost surely, 2^263673640341 is an apocalyptic number.

It is an amenable number.

263673640341 is a deficient number, since it is larger than the sum of its proper divisors (128682174699).

263673640341 is a wasteful number, since it uses less digits than its factorization.

263673640341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17314 (or 17308 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 45.

The spelling of 263673640341 in words is "two hundred sixty-three billion, six hundred seventy-three million, six hundred forty thousand, three hundred forty-one".