978494983143 has 16 divisors (see below), whose sum is σ = 1326628233216. Its totient is φ = 641355222240.

The previous prime is 978494983127. The next prime is 978494983181. The reversal of 978494983143 is 341389494879.

It is a happy number.

It is not a de Polignac number, because 978494983143 - 2⁴ = 978494983127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978494988143) 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 15 ways as a sum of consecutive naturals, for example, 750471 + ... + 1587512.

It is an arithmetic number, because the mean of its divisors is an integer number (82914264576).

Almost surely, 2^978494983143 is an apocalyptic number.

978494983143 is a deficient number, since it is larger than the sum of its proper divisors (348133250073).

978494983143 is a wasteful number, since it uses less digits than its factorization.

978494983143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340334.

The product of its digits is 188116992, while the sum is 69.

The spelling of 978494983143 in words is "nine hundred seventy-eight billion, four hundred ninety-four million, nine hundred eighty-three thousand, one hundred forty-three".