13133506665551 has 16 divisors (see below), whose sum is σ = 13997645835264. Its totient is φ = 12293852418144.

The previous prime is 13133506665473. The next prime is 13133506665583. The reversal of 13133506665551 is 15556660533131.

It is not a de Polignac number, because 13133506665551 - 2³⁸ = 12858628758607 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 13133506665551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13133505665551) 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, 9288365 + ... + 10608521.

It is an arithmetic number, because the mean of its divisors is an integer number (874852864704).

Almost surely, 2^{13133506665551} is an apocalyptic number.

13133506665551 is a deficient number, since it is larger than the sum of its proper divisors (864139169713).

13133506665551 is a wasteful number, since it uses less digits than its factorization.

13133506665551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329430.

The product of its (nonzero) digits is 3645000, while the sum is 50.

The spelling of 13133506665551 in words is "thirteen trillion, one hundred thirty-three billion, five hundred six million, six hundred sixty-five thousand, five hundred fifty-one".