135456106661 has 4 divisors (see below), whose sum is σ = 135578914752. Its totient is φ = 135333298572.

The previous prime is 135456106631. The next prime is 135456106679. The reversal of 135456106661 is 166601654531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135456106661 - 2²⁶ = 135388997797 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 (135456106631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61402391 + ... + 61404596.

It is an arithmetic number, because the mean of its divisors is an integer number (33894728688).

Almost surely, 2^135456106661 is an apocalyptic number.

It is an amenable number.

135456106661 is a deficient number, since it is larger than the sum of its proper divisors (122808091).

135456106661 is a wasteful number, since it uses less digits than its factorization.

135456106661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122808090.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 135456106661 in words is "one hundred thirty-five billion, four hundred fifty-six million, one hundred six thousand, six hundred sixty-one".