135321773018 has 4 divisors (see below), whose sum is σ = 202982659530. Its totient is φ = 67660886508.

The previous prime is 135321773003. The next prime is 135321773033. The reversal of 135321773018 is 810377123531.

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

It is an interprime number because it is at equal distance from previous prime (135321773003) and next prime (135321773033).

It can be written as a sum of positive squares in only one way, i.e., 115079028289 + 20242744729 = 339233^2 + 142277^2 .

It is a super-2 number, since 2×135321773018² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33830443253 + ... + 33830443256.

Almost surely, 2^135321773018 is an apocalyptic number.

135321773018 is a deficient number, since it is larger than the sum of its proper divisors (67660886512).

135321773018 is an equidigital number, since it uses as much as digits as its factorization.

135321773018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67660886511.

The product of its (nonzero) digits is 105840, while the sum is 41.

Adding to 135321773018 its reverse (810377123531), we get a palindrome (945698896549).

The spelling of 135321773018 in words is "one hundred thirty-five billion, three hundred twenty-one million, seven hundred seventy-three thousand, eighteen".