13434521020155 has 12 divisors (see below), whose sum is σ = 23286503101680. Its totient is φ = 7165077877392.

The previous prime is 13434521020127. The next prime is 13434521020163. The reversal of 13434521020155 is 55102012543431.

13434521020155 is a `hidden beast` number, since 1 + 3 + 43 + 452 + 10 + 2 + 0 + 155 = 666.

It is not a de Polignac number, because 13434521020155 - 2¹⁰ = 13434521019131 is a prime.

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, 149272455735 + ... + 149272455824.

It is an arithmetic number, because the mean of its divisors is an integer number (1940541925140).

Almost surely, 2^{13434521020155} is an apocalyptic number.

13434521020155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13434521020155 is a deficient number, since it is larger than the sum of its proper divisors (9851982081525).

13434521020155 is a wasteful number, since it uses less digits than its factorization.

13434521020155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298544911570 (or 298544911567 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 13434521020155 its reverse (55102012543431), we get a palindrome (68536533563586).

The spelling of 13434521020155 in words is "thirteen trillion, four hundred thirty-four billion, five hundred twenty-one million, twenty thousand, one hundred fifty-five".