19855041732 has 120 divisors (see below), whose sum is σ = 54279662976. Its totient is φ = 6316814592.

The previous prime is 19855041691. The next prime is 19855041749. The reversal of 19855041732 is 23714055891.

19855041732 is a `hidden beast` number, since 1 + 98 + 550 + 4 + 1 + 7 + 3 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3745708 + ... + 3751004.

Almost surely, 2^19855041732 is an apocalyptic number.

19855041732 is a gapful number since it is divisible by the number (12) 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 19855041732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27139831488).

19855041732 is an abundant number, since it is smaller than the sum of its proper divisors (34424621244).

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

19855041732 is a wasteful number, since it uses less digits than its factorization.

19855041732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5839 (or 5828 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 19855041732 in words is "nineteen billion, eight hundred fifty-five million, forty-one thousand, seven hundred thirty-two".