18967056213440 has 56 divisors (see below), whose sum is σ = 46126266530112. Its totient is φ = 7425400724480.

The previous prime is 18967056213433. The next prime is 18967056213461. The reversal of 18967056213440 is 4431265076981.

It is a happy number.

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, 630538691 + ... + 630568770.

It is a 1-persistent number, because it is pandigital, but 2⋅18967056213440 = 37934112426880 is not.

Almost surely, 2^{18967056213440} is an apocalyptic number.

18967056213440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18967056213440 is an abundant number, since it is smaller than the sum of its proper divisors (27159210316672).

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

18967056213440 is a wasteful number, since it uses less digits than its factorization.

18967056213440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261107525 (or 1261107515 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 18967056213440 in words is "eighteen trillion, nine hundred sixty-seven billion, fifty-six million, two hundred thirteen thousand, four hundred forty".