18649498560000 has 800 divisors, whose sum is σ = 77404251310848. Its totient is φ = 3875205120000.

The previous prime is 18649498559983. The next prime is 18649498560019. The reversal of 18649498560000 is 6589494681.

It is a tau number, because it is divible by the number of its divisors (800).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 73793854 + ... + 74046146.

Almost surely, 2^{18649498560000} is an apocalyptic number.

18649498560000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18649498560000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38702125655424).

18649498560000 is an abundant number, since it is smaller than the sum of its proper divisors (58754752750848).

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

18649498560000 is an equidigital number, since it uses as much as digits as its factorization.

18649498560000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252352 (or 252321 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 60.

The spelling of 18649498560000 in words is "eighteen trillion, six hundred forty-nine billion, four hundred ninety-eight million, five hundred sixty thousand".