19066995648 has 140 divisors (see below), whose sum is σ = 56967558912. Its totient is φ = 6305402880.

The previous prime is 19066995617. The next prime is 19066995671. The reversal of 19066995648 is 84659966091.

19066995648 is a `hidden beast` number, since 1 + 9 + 0 + 6 + 69 + 9 + 564 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 643888 + ... + 672848.

Almost surely, 2^19066995648 is an apocalyptic number.

19066995648 is a gapful number since it is divisible by the number (18) 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 19066995648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28483779456).

19066995648 is an abundant number, since it is smaller than the sum of its proper divisors (37900563264).

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

19066995648 is a wasteful number, since it uses less digits than its factorization.

19066995648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29112 (or 29093 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 19066995648 in words is "nineteen billion, sixty-six million, nine hundred ninety-five thousand, six hundred forty-eight".