1818558526272 has 112 divisors (see below), whose sum is σ = 4905002900160. Its totient is φ = 594431438848.

The previous prime is 1818558526261. The next prime is 1818558526283. The reversal of 1818558526272 is 2726258558181.

It is an interprime number because it is at equal distance from previous prime (1818558526261) and next prime (1818558526283).

It is a super-2 number, since 2×1818558526272² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19419979 + ... + 19513397.

Almost surely, 2^{1818558526272} is an apocalyptic number.

1818558526272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818558526272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2452501450080).

1818558526272 is an abundant number, since it is smaller than the sum of its proper divisors (3086444373888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1818558526272 is a wasteful number, since it uses less digits than its factorization.

1818558526272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95400 (or 95390 counting only the distinct ones).

The product of its digits is 21504000, while the sum is 60.

The spelling of 1818558526272 in words is "one trillion, eight hundred eighteen billion, five hundred fifty-eight million, five hundred twenty-six thousand, two hundred seventy-two".