18121441400341 has 4 divisors (see below), whose sum is σ = 18253714695372. Its totient is φ = 17989168105312.

The previous prime is 18121441400329. The next prime is 18121441400371. The reversal of 18121441400341 is 14300414412181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5125084738225 + 12996356662116 = 2263865^2 + 3605046^2 .

It is a cyclic number.

It is not a de Polignac number, because 18121441400341 - 2³⁷ = 17984002446869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18121441400297 and 18121441400306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18121441400311) 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, 66136647310 + ... + 66136647583.

It is an arithmetic number, because the mean of its divisors is an integer number (4563428673843).

Almost surely, 2^{18121441400341} is an apocalyptic number.

It is an amenable number.

18121441400341 is a deficient number, since it is larger than the sum of its proper divisors (132273295031).

18121441400341 is a wasteful number, since it uses less digits than its factorization.

18121441400341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132273295030.

The product of its (nonzero) digits is 12288, while the sum is 34.

The spelling of 18121441400341 in words is "eighteen trillion, one hundred twenty-one billion, four hundred forty-one million, four hundred thousand, three hundred forty-one".