18371013225713 has 16 divisors (see below), whose sum is σ = 18523386332496. Its totient is φ = 18218912163840.

The previous prime is 18371013225709. The next prime is 18371013225793. The reversal of 18371013225713 is 31752231017381.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1544879956624 + 16826133269089 = 1242932^2 + 4101967^2 .

It is not a de Polignac number, because 18371013225713 - 2² = 18371013225709 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18371013225793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919782395 + ... + 919802367.

It is an arithmetic number, because the mean of its divisors is an integer number (1157711645781).

Almost surely, 2^{18371013225713} is an apocalyptic number.

It is an amenable number.

18371013225713 is a deficient number, since it is larger than the sum of its proper divisors (152373106783).

18371013225713 is a wasteful number, since it uses less digits than its factorization.

18371013225713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26404.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 18371013225713 in words is "eighteen trillion, three hundred seventy-one billion, thirteen million, two hundred twenty-five thousand, seven hundred thirteen".