18255441167874 has 128 divisors (see below), whose sum is σ = 44252702208000. Its totient is φ = 5556334190400.

The previous prime is 18255441167869. The next prime is 18255441167879. The reversal of 18255441167874 is 47876114455281.

It is a happy number.

18255441167874 is a `hidden beast` number, since 1 + 8 + 2 + 5 + 544 + 1 + 1 + 6 + 7 + 87 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (18255441167869) and next prime (18255441167879).

It is a super-2 number, since 2×18255441167874² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18255441167879) 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, 16452279 + ... + 17526789.

It is an arithmetic number, because the mean of its divisors is an integer number (345724236000).

Almost surely, 2^{18255441167874} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18255441167874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22126351104000).

18255441167874 is an abundant number, since it is smaller than the sum of its proper divisors (25997261040126).

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

18255441167874 is a wasteful number, since it uses less digits than its factorization.

18255441167874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075141 (or 1075135 counting only the distinct ones).

The product of its digits is 60211200, while the sum is 63.

The spelling of 18255441167874 in words is "eighteen trillion, two hundred fifty-five billion, four hundred forty-one million, one hundred sixty-seven thousand, eight hundred seventy-four".