135771262177531 has 4 divisors (see below), whose sum is σ = 135807868075600. Its totient is φ = 135734656279464.

The previous prime is 135771262177427. The next prime is 135771262177547.

135771262177531 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 135771262177531 - 2¹⁹ = 135771261653243 is a prime.

It is a super-2 number, since 2×135771262177531² (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 (135771262177561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18302943471 + ... + 18302950888.

It is an arithmetic number, because the mean of its divisors is an integer number (33951967018900).

Almost surely, 2^{135771262177531} is an apocalyptic number.

135771262177531 is a deficient number, since it is larger than the sum of its proper divisors (36605898069).

135771262177531 is an equidigital number, since it uses as much as digits as its factorization.

135771262177531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36605898068.

The product of its digits is 12965400, while the sum is 58.

The spelling of 135771262177531 in words is "one hundred thirty-five trillion, seven hundred seventy-one billion, two hundred sixty-two million, one hundred seventy-seven thousand, five hundred thirty-one".