199419581945920 has 112 divisors (see below), whose sum is σ = 561420153296640. Its totient is φ = 66014758139904.

The previous prime is 199419581945917. The next prime is 199419581945953. The reversal of 199419581945920 is 29549185914991.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1534876404 + ... + 1535006323.

Almost surely, 2^{199419581945920} is an apocalyptic number.

199419581945920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199419581945920 is an abundant number, since it is smaller than the sum of its proper divisors (362000571350720).

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

199419581945920 is a wasteful number, since it uses less digits than its factorization.

199419581945920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069882780 (or 3069882770 counting only the distinct ones).

The product of its (nonzero) digits is 377913600, while the sum is 76.

The spelling of 199419581945920 in words is "one hundred ninety-nine trillion, four hundred nineteen billion, five hundred eighty-one million, nine hundred forty-five thousand, nine hundred twenty".