133663503135551 has 16 divisors (see below), whose sum is σ = 141370254858240. Its totient is φ = 126169317264480.

The previous prime is 133663503135529. The next prime is 133663503135577. The reversal of 133663503135551 is 155531305366331.

It is a cyclic number.

It is not a de Polignac number, because 133663503135551 - 2¹⁰ = 133663503134527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133663503135551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133663503135251) 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, 52824215 + ... + 55296696.

It is an arithmetic number, because the mean of its divisors is an integer number (8835640928640).

Almost surely, 2^{133663503135551} is an apocalyptic number.

133663503135551 is a deficient number, since it is larger than the sum of its proper divisors (7706751722689).

133663503135551 is a wasteful number, since it uses less digits than its factorization.

133663503135551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108121894.

The product of its (nonzero) digits is 5467500, while the sum is 50.

The spelling of 133663503135551 in words is "one hundred thirty-three trillion, six hundred sixty-three billion, five hundred three million, one hundred thirty-five thousand, five hundred fifty-one".