18012251437730 has 96 divisors (see below), whose sum is σ = 35753967889920. Its totient is φ = 6528516508800.

The previous prime is 18012251437721. The next prime is 18012251437777. The reversal of 18012251437730 is 3773415221081.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 901008035 + ... + 901028025.

It is an arithmetic number, because the mean of its divisors is an integer number (372437165520).

Almost surely, 2^{18012251437730} is an apocalyptic number.

18012251437730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18012251437730 is a deficient number, since it is larger than the sum of its proper divisors (17741716452190).

18012251437730 is a wasteful number, since it uses less digits than its factorization.

18012251437730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22416 (or 22405 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 18012251437730 in words is "eighteen trillion, twelve billion, two hundred fifty-one million, four hundred thirty-seven thousand, seven hundred thirty".