135452021255 has 4 divisors (see below), whose sum is σ = 162542425512. Its totient is φ = 108361617000.

The previous prime is 135452021183. The next prime is 135452021281. The reversal of 135452021255 is 552120254531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552120254531 = 4007 ⋅137788933.

It is not a de Polignac number, because 135452021255 - 2²² = 135447826951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13545202121 + ... + 13545202130.

It is an arithmetic number, because the mean of its divisors is an integer number (40635606378).

Almost surely, 2^135452021255 is an apocalyptic number.

135452021255 is a deficient number, since it is larger than the sum of its proper divisors (27090404257).

135452021255 is an equidigital number, since it uses as much as digits as its factorization.

135452021255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27090404256.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 135452021255 its reverse (552120254531), we get a palindrome (687572275786).

The spelling of 135452021255 in words is "one hundred thirty-five billion, four hundred fifty-two million, twenty-one thousand, two hundred fifty-five".