18626344184253 has 16 divisors (see below), whose sum is σ = 27005185101440. Its totient is φ = 11351080545984.

The previous prime is 18626344184251. The next prime is 18626344184263. The reversal of 18626344184253 is 35248144362681.

It is a happy number.

It is not a de Polignac number, because 18626344184253 - 2¹ = 18626344184251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18626344184193 and 18626344184202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18626344184251) 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, 2318435638 + ... + 2318443671.

It is an arithmetic number, because the mean of its divisors is an integer number (1687824068840).

Almost surely, 2^{18626344184253} is an apocalyptic number.

18626344184253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18626344184253 is a deficient number, since it is larger than the sum of its proper divisors (8378840917187).

18626344184253 is a wasteful number, since it uses less digits than its factorization.

18626344184253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636879428.

The product of its digits is 26542080, while the sum is 57.

The spelling of 18626344184253 in words is "eighteen trillion, six hundred twenty-six billion, three hundred forty-four million, one hundred eighty-four thousand, two hundred fifty-three".