135441651155561 has 8 divisors (see below), whose sum is σ = 138644415253344. Its totient is φ = 132241294251360.

The previous prime is 135441651155549. The next prime is 135441651155663. The reversal of 135441651155561 is 165551156144531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135441651155561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135441651154561) 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, 601684535 + ... + 601909596.

It is an arithmetic number, because the mean of its divisors is an integer number (17330551906668).

Almost surely, 2^{135441651155561} is an apocalyptic number.

It is an amenable number.

135441651155561 is a deficient number, since it is larger than the sum of its proper divisors (3202764097783).

135441651155561 is a wasteful number, since it uses less digits than its factorization.

135441651155561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203596791.

The product of its digits is 5400000, while the sum is 53.

The spelling of 135441651155561 in words is "one hundred thirty-five trillion, four hundred forty-one billion, six hundred fifty-one million, one hundred fifty-five thousand, five hundred sixty-one".