19980893444850 has 576 divisors, whose sum is σ = 60436762049664. Its totient is φ = 4878814187520.

The previous prime is 19980893444843. The next prime is 19980893444861. The reversal of 19980893444850 is 5844439808991.

19980893444850 is a `hidden beast` number, since 1 + 9 + 98 + 0 + 8 + 93 + 4 + 448 + 5 + 0 = 666.

It is a super-2 number, since 2×19980893444850² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 13473292209 + ... + 13473293691.

It is an arithmetic number, because the mean of its divisors is an integer number (104924934114).

Almost surely, 2^{19980893444850} is an apocalyptic number.

19980893444850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19980893444850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30218381024832).

19980893444850 is an abundant number, since it is smaller than the sum of its proper divisors (40455868604814).

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

19980893444850 is a wasteful number, since it uses less digits than its factorization.

19980893444850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 358318080, while the sum is 72.

The spelling of 19980893444850 in words is "nineteen trillion, nine hundred eighty billion, eight hundred ninety-three million, four hundred forty-four thousand, eight hundred fifty".