13213012145 has 8 divisors (see below), whose sum is σ = 15856537320. Its totient is φ = 10569794560.

The previous prime is 13213012139. The next prime is 13213012199. The reversal of 13213012145 is 54121031231.

It can be written as a sum of positive squares in 4 ways, for example, as 473149504 + 12739862641 = 21752^2 + 112871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13213012145 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13213012145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31505 + ... + 165585.

It is an arithmetic number, because the mean of its divisors is an integer number (1982067165).

Almost surely, 2^13213012145 is an apocalyptic number.

It is an amenable number.

13213012145 is a deficient number, since it is larger than the sum of its proper divisors (2643525175).

13213012145 is a wasteful number, since it uses less digits than its factorization.

13213012145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153795.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 13213012145 its reverse (54121031231), we get a palindrome (67334043376).

The spelling of 13213012145 in words is "thirteen billion, two hundred thirteen million, twelve thousand, one hundred forty-five".