19958044995 has 48 divisors (see below), whose sum is σ = 39905498880. Its totient is φ = 9038394432.

The previous prime is 19958044987. The next prime is 19958045071. The reversal of 19958044995 is 59944085991.

19958044995 is a `hidden beast` number, since 1 + 9 + 9 + 580 + 4 + 49 + 9 + 5 = 666.

It is not a de Polignac number, because 19958044995 - 2³ = 19958044987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 262365 + ... + 329774.

It is an arithmetic number, because the mean of its divisors is an integer number (831364560).

Almost surely, 2^19958044995 is an apocalyptic number.

19958044995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19958044995 is a deficient number, since it is larger than the sum of its proper divisors (19947453885).

19958044995 is a wasteful number, since it uses less digits than its factorization.

19958044995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592264 (or 592261 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 63.

The spelling of 19958044995 in words is "nineteen billion, nine hundred fifty-eight million, forty-four thousand, nine hundred ninety-five".