133640234051263 has 4 divisors (see below), whose sum is σ = 133640257171840. Its totient is φ = 133640210930688.

The previous prime is 133640234051201. The next prime is 133640234051327. The reversal of 133640234051263 is 362150432046331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 133640234051263 - 2⁴¹ = 131441210795711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133640234051663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5772706 + ... + 17337952.

It is an arithmetic number, because the mean of its divisors is an integer number (33410064292960).

Almost surely, 2^{133640234051263} is an apocalyptic number.

133640234051263 is a deficient number, since it is larger than the sum of its proper divisors (23120577).

133640234051263 is a wasteful number, since it uses less digits than its factorization.

133640234051263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23120576.

The product of its (nonzero) digits is 933120, while the sum is 43.

Adding to 133640234051263 its reverse (362150432046331), we get a palindrome (495790666097594).

The spelling of 133640234051263 in words is "one hundred thirty-three trillion, six hundred forty billion, two hundred thirty-four million, fifty-one thousand, two hundred sixty-three".