135144525251 has 8 divisors (see below), whose sum is σ = 135677450784. Its totient is φ = 134611968960.

The previous prime is 135144525233. The next prime is 135144525283. The reversal of 135144525251 is 152525441531.

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 135144525251 - 2²² = 135140330947 is a prime.

It is a super-2 number, since 2×135144525251² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135144525211) 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, 652961 + ... + 834653.

It is an arithmetic number, because the mean of its divisors is an integer number (16959681348).

Almost surely, 2^135144525251 is an apocalyptic number.

135144525251 is a deficient number, since it is larger than the sum of its proper divisors (532925533).

135144525251 is a wasteful number, since it uses less digits than its factorization.

135144525251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184621.

The product of its digits is 120000, while the sum is 38.

Adding to 135144525251 its reverse (152525441531), we get a palindrome (287669966782).

The spelling of 135144525251 in words is "one hundred thirty-five billion, one hundred forty-four million, five hundred twenty-five thousand, two hundred fifty-one".