135611522851 has 24 divisors (see below), whose sum is σ = 167103142560. Its totient is φ = 109354113792.

The previous prime is 135611522831. The next prime is 135611522863. The reversal of 135611522851 is 158225116531.

It is not a de Polignac number, because 135611522851 - 2⁵ = 135611522819 is a prime.

It is a super-3 number, since 3×135611522851³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135611522801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1984765 + ... + 2051953.

It is an arithmetic number, because the mean of its divisors is an integer number (6962630940).

Almost surely, 2^135611522851 is an apocalyptic number.

135611522851 is a deficient number, since it is larger than the sum of its proper divisors (31491619709).

135611522851 is a wasteful number, since it uses less digits than its factorization.

135611522851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69643 (or 69636 counting only the distinct ones).

The product of its digits is 72000, while the sum is 40.

The spelling of 135611522851 in words is "one hundred thirty-five billion, six hundred eleven million, five hundred twenty-two thousand, eight hundred fifty-one".