13123552321045 has 32 divisors (see below), whose sum is σ = 16712883129600. Its totient is φ = 9865073327616.

The previous prime is 13123552321021. The next prime is 13123552321067. The reversal of 13123552321045 is 54012325532131.

It is a happy number.

It is not a de Polignac number, because 13123552321045 - 2¹⁵ = 13123552288277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13123552320995 and 13123552321013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6345271 + ... + 8155339.

It is an arithmetic number, because the mean of its divisors is an integer number (522277597800).

Almost surely, 2^{13123552321045} is an apocalyptic number.

It is an amenable number.

13123552321045 is a deficient number, since it is larger than the sum of its proper divisors (3589330808555).

13123552321045 is a wasteful number, since it uses less digits than its factorization.

13123552321045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810717.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 13123552321045 its reverse (54012325532131), we get a palindrome (67135877853176).

The spelling of 13123552321045 in words is "thirteen trillion, one hundred twenty-three billion, five hundred fifty-two million, three hundred twenty-one thousand, forty-five".