135315223537 has 4 divisors (see below), whose sum is σ = 145724086900. Its totient is φ = 124906360176.

The previous prime is 135315223531. The next prime is 135315223543. The reversal of 135315223537 is 735322513531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 735322513531 = 585997 ⋅1254823.

It is an interprime number because it is at equal distance from previous prime (135315223531) and next prime (135315223543).

It can be written as a sum of positive squares in 2 ways, for example, as 53642728881 + 81672494656 = 231609^2 + 285784^2 .

It is not a de Polignac number, because 135315223537 - 2³ = 135315223529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135315223537.

It is not an unprimeable number, because it can be changed into a prime (135315223531) 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, 5204431662 + ... + 5204431687.

It is an arithmetic number, because the mean of its divisors is an integer number (36431021725).

Almost surely, 2^135315223537 is an apocalyptic number.

It is an amenable number.

135315223537 is a deficient number, since it is larger than the sum of its proper divisors (10408863363).

135315223537 is a wasteful number, since it uses less digits than its factorization.

135315223537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10408863362.

The product of its digits is 283500, while the sum is 40.

The spelling of 135315223537 in words is "one hundred thirty-five billion, three hundred fifteen million, two hundred twenty-three thousand, five hundred thirty-seven".