13130520213145 has 8 divisors (see below), whose sum is σ = 15773157970056. Its totient is φ = 10493393694336.

The previous prime is 13130520213091. The next prime is 13130520213221. The reversal of 13130520213145 is 54131202503131.

It can be written as a sum of positive squares in 4 ways, for example, as 819769078921 + 12310751134224 = 905411^2 + 3508668^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13130520213145 - 2¹¹ = 13130520211097 is a prime.

It is a super-2 number, since 2×13130520213145² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

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, 1377804282 + ... + 1377813811.

It is an arithmetic number, because the mean of its divisors is an integer number (1971644746257).

Almost surely, 2^{13130520213145} is an apocalyptic number.

It is an amenable number.

13130520213145 is a deficient number, since it is larger than the sum of its proper divisors (2642637756911).

13130520213145 is an equidigital number, since it uses as much as digits as its factorization.

13130520213145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755619051.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 13130520213145 its reverse (54131202503131), we get a palindrome (67261722716276).

The spelling of 13130520213145 in words is "thirteen trillion, one hundred thirty billion, five hundred twenty million, two hundred thirteen thousand, one hundred forty-five".