13125520212145 has 16 divisors (see below), whose sum is σ = 17207879588928. Its totient is φ = 9531732658240.

The previous prime is 13125520212143. The next prime is 13125520212151. The reversal of 13125520212145 is 54121202552131.

It is not a de Polignac number, because 13125520212145 - 2¹ = 13125520212143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13125520212145.

It is not an unprimeable number, because it can be changed into a prime (13125520212143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176215219 + ... + 176289688.

It is an arithmetic number, because the mean of its divisors is an integer number (1075492474308).

Almost surely, 2^{13125520212145} is an apocalyptic number.

It is an amenable number.

13125520212145 is a deficient number, since it is larger than the sum of its proper divisors (4082359376783).

13125520212145 is a wasteful number, since it uses less digits than its factorization.

13125520212145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352505600.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 13125520212145 its reverse (54121202552131), we get a palindrome (67246722764276).

The spelling of 13125520212145 in words is "thirteen trillion, one hundred twenty-five billion, five hundred twenty million, two hundred twelve thousand, one hundred forty-five".