263605533242131 has 8 divisors (see below), whose sum is σ = 267224083201520. Its totient is φ = 259987186397952.

The previous prime is 263605533242111. The next prime is 263605533242137. The reversal of 263605533242131 is 131242335506362.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 263605533242131 - 2¹⁷ = 263605533111059 is a prime.

It is a super-2 number, since 2×263605533242131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263605533242137) 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, 48164445 + ... + 53357518.

It is an arithmetic number, because the mean of its divisors is an integer number (33403010400190).

Almost surely, 2^{263605533242131} is an apocalyptic number.

263605533242131 is a deficient number, since it is larger than the sum of its proper divisors (3618549959389).

263605533242131 is a wasteful number, since it uses less digits than its factorization.

263605533242131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101557605.

The product of its (nonzero) digits is 2332800, while the sum is 46.

Adding to 263605533242131 its reverse (131242335506362), we get a palindrome (394847868748493).

The spelling of 263605533242131 in words is "two hundred sixty-three trillion, six hundred five billion, five hundred thirty-three million, two hundred forty-two thousand, one hundred thirty-one".