1999447650144 has 192 divisors, whose sum is σ = 6954601006080. Its totient is φ = 546432860160.

The previous prime is 1999447650073. The next prime is 1999447650229. The reversal of 1999447650144 is 4410567449991.

1999447650144 is a `hidden beast` number, since 1 + 9 + 99 + 447 + 65 + 0 + 1 + 44 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7047777 + ... + 7325984.

It is an arithmetic number, because the mean of its divisors is an integer number (36221880240).

Almost surely, 2^{1999447650144} is an apocalyptic number.

1999447650144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1999447650144 is an abundant number, since it is smaller than the sum of its proper divisors (4955153355936).

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

1999447650144 is a wasteful number, since it uses less digits than its factorization.

1999447650144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14373810 (or 14373796 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 1999447650144 in words is "one trillion, nine hundred ninety-nine billion, four hundred forty-seven million, six hundred fifty thousand, one hundred forty-four".