135121000553 has 16 divisors (see below), whose sum is σ = 175787006976. Its totient is φ = 100711303440.

The previous prime is 135121000549. The next prime is 135121000559. The reversal of 135121000553 is 355000121531.

It is a happy number.

It is not a de Polignac number, because 135121000553 - 2² = 135121000549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135121000559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38146451 + ... + 38149992.

It is an arithmetic number, because the mean of its divisors is an integer number (10986687936).

Almost surely, 2^135121000553 is an apocalyptic number.

It is an amenable number.

135121000553 is a deficient number, since it is larger than the sum of its proper divisors (40666006423).

135121000553 is a wasteful number, since it uses less digits than its factorization.

135121000553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76296484.

The product of its (nonzero) digits is 2250, while the sum is 26.

The spelling of 135121000553 in words is "one hundred thirty-five billion, one hundred twenty-one million, five hundred fifty-three", and thus it is an aban number.