19889782011054 has 24 divisors (see below), whose sum is σ = 44690621309880. Its totient is φ = 6629927336856.

The previous prime is 19889782011007. The next prime is 19889782011101. The reversal of 19889782011054 is 45011028798891.

It is an interprime number because it is at equal distance from previous prime (19889782011007) and next prime (19889782011101).

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19889782010982 and 19889782011000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20462738209 + ... + 20462739180.

It is an arithmetic number, because the mean of its divisors is an integer number (1862109221245).

Almost surely, 2^{19889782011054} is an apocalyptic number.

19889782011054 is an abundant number, since it is smaller than the sum of its proper divisors (24800839298826).

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

19889782011054 is an equidigital number, since it uses as much as digits as its factorization.

19889782011054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40925477406 (or 40925477394 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 63.

The spelling of 19889782011054 in words is "nineteen trillion, eight hundred eighty-nine billion, seven hundred eighty-two million, eleven thousand, fifty-four".