19418450556660 has 48 divisors (see below), whose sum is σ = 56125586130432. Its totient is φ = 5011213046400.

The previous prime is 19418450556611. The next prime is 19418450556679. The reversal of 19418450556660 is 6665505481491.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 19418450556594 and 19418450556603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5220011731 + ... + 5220015450.

It is an arithmetic number, because the mean of its divisors is an integer number (1169283044384).

Almost surely, 2^{19418450556660} is an apocalyptic number.

19418450556660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19418450556660 is an abundant number, since it is smaller than the sum of its proper divisors (36707135573772).

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

19418450556660 is a wasteful number, since it uses less digits than its factorization.

19418450556660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10440027224 (or 10440027222 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 60.

The spelling of 19418450556660 in words is "nineteen trillion, four hundred eighteen billion, four hundred fifty million, five hundred fifty-six thousand, six hundred sixty".