135131125501 has 8 divisors (see below), whose sum is σ = 135685508184. Its totient is φ = 134577549120.

The previous prime is 135131125489. The next prime is 135131125537. The reversal of 135131125501 is 105521131531.

It can be written as a sum of positive squares in 4 ways, for example, as 552203001 + 134578922500 = 23499^2 + 366850^2 .

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 135131125501 - 2¹¹ = 135131123453 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 135131125501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135131125601) 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, 135451 + ... + 537223.

It is an arithmetic number, because the mean of its divisors is an integer number (16960688523).

Almost surely, 2^135131125501 is an apocalyptic number.

It is an amenable number.

135131125501 is a deficient number, since it is larger than the sum of its proper divisors (554382683).

135131125501 is a wasteful number, since it uses less digits than its factorization.

135131125501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403151.

The product of its (nonzero) digits is 2250, while the sum is 28.

The spelling of 135131125501 in words is "one hundred thirty-five billion, one hundred thirty-one million, one hundred twenty-five thousand, five hundred one".