999976000143 has 32 divisors (see below), whose sum is σ = 1410049175040. Its totient is φ = 628609351680.

The previous prime is 999976000141. The next prime is 999976000157. The reversal of 999976000143 is 341000679999.

It is a Cunningham number, because it is equal to 999988²-1.

It is not a de Polignac number, because 999976000143 - 2¹ = 999976000141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999976000141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18973438 + ... + 19026068.

It is an arithmetic number, because the mean of its divisors is an integer number (44064036720).

Almost surely, 2^999976000143 is an apocalyptic number.

999976000143 is a deficient number, since it is larger than the sum of its proper divisors (410073174897).

999976000143 is a wasteful number, since it uses less digits than its factorization.

999976000143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54207.

The product of its (nonzero) digits is 3306744, while the sum is 57.

The spelling of 999976000143 in words is "nine hundred ninety-nine billion, nine hundred seventy-six million, one hundred forty-three", and thus it is an aban number.