18808120765673 has 4 divisors (see below), whose sum is σ = 18810792760320. Its totient is φ = 18805448771028.

The previous prime is 18808120765633. The next prime is 18808120765757. The reversal of 18808120765673 is 37656702180881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18808120765673 - 2¹⁰ = 18808120764649 is a prime.

It is a super-2 number, since 2×18808120765673² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18808120765633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335986765 + ... + 1336000842.

It is an arithmetic number, because the mean of its divisors is an integer number (4702698190080).

Almost surely, 2^{18808120765673} is an apocalyptic number.

It is an amenable number.

18808120765673 is a deficient number, since it is larger than the sum of its proper divisors (2671994647).

18808120765673 is an equidigital number, since it uses as much as digits as its factorization.

18808120765673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671994646.

The product of its (nonzero) digits is 27095040, while the sum is 62.

The spelling of 18808120765673 in words is "eighteen trillion, eight hundred eight billion, one hundred twenty million, seven hundred sixty-five thousand, six hundred seventy-three".