19886925755 has 16 divisors (see below), whose sum is σ = 24156516384. Its totient is φ = 15715468800.

The previous prime is 19886925749. The next prime is 19886925767. The reversal of 19886925755 is 55752968891.

It is not a de Polignac number, because 19886925755 - 2⁶ = 19886925691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19886925691 and 19886925700.

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 15 ways as a sum of consecutive naturals, for example, 173192 + ... + 264138.

It is an arithmetic number, because the mean of its divisors is an integer number (1509782274).

Almost surely, 2^19886925755 is an apocalyptic number.

19886925755 is a deficient number, since it is larger than the sum of its proper divisors (4269590629).

19886925755 is a wasteful number, since it uses less digits than its factorization.

19886925755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91486.

The product of its digits is 54432000, while the sum is 65.

The spelling of 19886925755 in words is "nineteen billion, eight hundred eighty-six million, nine hundred twenty-five thousand, seven hundred fifty-five".