19055968890840 has 768 divisors, whose sum is σ = 76065307269120. Its totient is φ = 4038136381440.

The previous prime is 19055968890817. The next prime is 19055968890851. The reversal of 19055968890840 is 4809886955091.

19055968890840 is a `hidden beast` number, since 1 + 9 + 0 + 559 + 68 + 8 + 9 + 0 + 8 + 4 + 0 = 666.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4857497119 + ... + 4857501041.

It is an arithmetic number, because the mean of its divisors is an integer number (99043368840).

Almost surely, 2^{19055968890840} is an apocalyptic number.

19055968890840 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 19055968890840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38032653634560).

19055968890840 is an abundant number, since it is smaller than the sum of its proper divisors (57009338378280).

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

19055968890840 is a wasteful number, since it uses less digits than its factorization.

19055968890840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632 (or 5625 counting only the distinct ones).

The product of its (nonzero) digits is 223948800, while the sum is 72.

The spelling of 19055968890840 in words is "nineteen trillion, fifty-five billion, nine hundred sixty-eight million, eight hundred ninety thousand, eight hundred forty".