135557788891 has 8 divisors (see below), whose sum is σ = 155018420480. Its totient is φ = 116120965608.

The previous prime is 135557788889. The next prime is 135557788901. The reversal of 135557788891 is 198887755531.

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 135557788891 - 2¹ = 135557788889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135557788841) 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, 5939871 + ... + 5962648.

It is an arithmetic number, because the mean of its divisors is an integer number (19377302560).

Almost surely, 2^135557788891 is an apocalyptic number.

135557788891 is a deficient number, since it is larger than the sum of its proper divisors (19460631589).

135557788891 is a wasteful number, since it uses less digits than its factorization.

135557788891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11904153.

The product of its digits is 84672000, while the sum is 67.

The spelling of 135557788891 in words is "one hundred thirty-five billion, five hundred fifty-seven million, seven hundred eighty-eight thousand, eight hundred ninety-one".