135145545541531 has 4 divisors (see below), whose sum is σ = 154452052047472. Its totient is φ = 115839039035592.

The previous prime is 135145545541529. The next prime is 135145545541549.

135145545541531 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135145545541531 - 2¹ = 135145545541529 is a prime.

It is a super-2 number, since 2×135145545541531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135145545541511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9653253252960 + ... + 9653253252973.

It is an arithmetic number, because the mean of its divisors is an integer number (38613013011868).

Almost surely, 2^{135145545541531} is an apocalyptic number.

135145545541531 is a deficient number, since it is larger than the sum of its proper divisors (19306506505941).

135145545541531 is an equidigital number, since it uses as much as digits as its factorization.

135145545541531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19306506505940.

The product of its digits is 9000000, while the sum is 52.

The spelling of 135145545541531 in words is "one hundred thirty-five trillion, one hundred forty-five billion, five hundred forty-five million, five hundred forty-one thousand, five hundred thirty-one".