135361163531 has 16 divisors (see below), whose sum is σ = 152284665600. Its totient is φ = 119266072800.

The previous prime is 135361163519. The next prime is 135361163549.

135361163531 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 135361163531 - 2¹⁴ = 135361147147 is a prime.

It is a super-2 number, since 2×135361163531² (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 (135361163551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1422716 + ... + 1514873.

It is an arithmetic number, because the mean of its divisors is an integer number (9517791600).

Almost surely, 2^135361163531 is an apocalyptic number.

135361163531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135361163531 is a deficient number, since it is larger than the sum of its proper divisors (16923502069).

135361163531 is a wasteful number, since it uses less digits than its factorization.

135361163531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937730.

The product of its digits is 72900, while the sum is 38.

It can be divided in two parts, 135361 and 163531, that added together give a palindrome (298892).

The spelling of 135361163531 in words is "one hundred thirty-five billion, three hundred sixty-one million, one hundred sixty-three thousand, five hundred thirty-one".