918373121373819 has 64 divisors (see below), whose sum is σ = 1312452408960000. Its totient is φ = 569183303270400.

The previous prime is 918373121373811. The next prime is 918373121373863.

918373121373819 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 918373121373819 - 2³ = 918373121373811 is a prime.

It is a super-2 number, since 2×918373121373819² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 918373121373819.

It is not an unprimeable number, because it can be changed into a prime (918373121373811) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21367928472 + ... + 21367971450.

It is an arithmetic number, because the mean of its divisors is an integer number (20507068890000).

Almost surely, 2^{918373121373819} is an apocalyptic number.

918373121373819 is a deficient number, since it is larger than the sum of its proper divisors (394079287586181).

918373121373819 is a wasteful number, since it uses less digits than its factorization.

918373121373819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52788.

The product of its digits is 41150592, while the sum is 66.

The spelling of 918373121373819 in words is "nine hundred eighteen trillion, three hundred seventy-three billion, one hundred twenty-one million, three hundred seventy-three thousand, eight hundred nineteen".