135021405254355 has 12 divisors (see below), whose sum is σ = 234037102440960. Its totient is φ = 72011416135632.

The previous prime is 135021405254321. The next prime is 135021405254413. The reversal of 135021405254355 is 553452504120531.

135021405254355 is a `hidden beast` number, since 1 + 3 + 5 + 0 + 2 + 1 + 4 + 0 + 52 + 543 + 55 = 666.

It is not a de Polignac number, because 135021405254355 - 2⁷ = 135021405254227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3000475672319 = 135021405254355 / (1 + 3 + 5 + 0 + 2 + 1 + 4 + 0 + 5 + 2 + 5 + 4 + 3 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 135021405254355.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1500237836115 + ... + 1500237836204.

It is an arithmetic number, because the mean of its divisors is an integer number (19503091870080).

Almost surely, 2^{135021405254355} is an apocalyptic number.

135021405254355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135021405254355 is a deficient number, since it is larger than the sum of its proper divisors (99015697186605).

135021405254355 is a wasteful number, since it uses less digits than its factorization.

135021405254355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000475672330 (or 3000475672327 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

Adding to 135021405254355 its reverse (553452504120531), we get a palindrome (688473909374886).

The spelling of 135021405254355 in words is "one hundred thirty-five trillion, twenty-one billion, four hundred five million, two hundred fifty-four thousand, three hundred fifty-five".