18126426106240 has 64 divisors (see below), whose sum is σ = 45217552116960. Its totient is φ = 6935328243712.

The previous prime is 18126426106219. The next prime is 18126426106277. The reversal of 18126426106240 is 4260162462181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615692689 + ... + 615722128.

Almost surely, 2^{18126426106240} is an apocalyptic number.

18126426106240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18126426106240 is an abundant number, since it is smaller than the sum of its proper divisors (27091126010720).

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

18126426106240 is a wasteful number, since it uses less digits than its factorization.

18126426106240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231414859 (or 1231414847 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 18126426106240 in words is "eighteen trillion, one hundred twenty-six billion, four hundred twenty-six million, one hundred six thousand, two hundred forty".