18252008261944 has 16 divisors (see below), whose sum is σ = 34260081383520. Its totient is φ = 9115986559680.

The previous prime is 18252008261887. The next prime is 18252008261947. The reversal of 18252008261944 is 44916280025281.

It is a junction number, because it is equal to n+sod(n) for n = 18252008261891 and 18252008261900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18252008261947) 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, 1252188669 + ... + 1252203244.

It is an arithmetic number, because the mean of its divisors is an integer number (2141255086470).

Almost surely, 2^{18252008261944} is an apocalyptic number.

It is an amenable number.

18252008261944 is a deficient number, since it is larger than the sum of its proper divisors (16008073121576).

18252008261944 is a wasteful number, since it uses less digits than its factorization.

18252008261944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504392830 (or 2504392826 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 18252008261944 in words is "eighteen trillion, two hundred fifty-two billion, eight million, two hundred sixty-one thousand, nine hundred forty-four".