18025051021268 has 12 divisors (see below), whose sum is σ = 32631557883540. Its totient is φ = 8701748768832.

The previous prime is 18025051021259. The next prime is 18025051021319. The reversal of 18025051021268 is 86212015052081.

It can be written as a sum of positive squares in 2 ways, for example, as 9659987234704 + 8365063786564 = 3108052^2 + 2892242^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77694185321 + ... + 77694185552.

It is an arithmetic number, because the mean of its divisors is an integer number (2719296490295).

Almost surely, 2^{18025051021268} is an apocalyptic number.

It is an amenable number.

18025051021268 is a deficient number, since it is larger than the sum of its proper divisors (14606506862272).

18025051021268 is a wasteful number, since it uses less digits than its factorization.

18025051021268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155388370906 (or 155388370904 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 41.

The spelling of 18025051021268 in words is "eighteen trillion, twenty-five billion, fifty-one million, twenty-one thousand, two hundred sixty-eight".