16476631978 has 8 divisors (see below), whose sum is σ = 24716344068. Its totient is φ = 8237850624.

The previous prime is 16476631973. The next prime is 16476631979. The reversal of 16476631978 is 87913667461.

It can be written as a sum of positive squares in 2 ways, for example, as 14739659649 + 1736972329 = 121407^2 + 41677^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16476631973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186601 + ... + 260332.

Almost surely, 2^16476631978 is an apocalyptic number.

16476631978 is a deficient number, since it is larger than the sum of its proper divisors (8239712090).

16476631978 is a wasteful number, since it uses less digits than its factorization.

16476631978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465368.

The product of its digits is 9144576, while the sum is 58.

The spelling of 16476631978 in words is "sixteen billion, four hundred seventy-six million, six hundred thirty-one thousand, nine hundred seventy-eight".