16471996858 has 4 divisors (see below), whose sum is σ = 24707995290. Its totient is φ = 8235998428.

The previous prime is 16471996763. The next prime is 16471996867. The reversal of 16471996858 is 85869917461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85869917461 = 709 ⋅121114129.

It can be written as a sum of positive squares in only one way, i.e., 14692591369 + 1779405489 = 121213^2 + 42183^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16471996858.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4117999213 + ... + 4117999216.

Almost surely, 2^16471996858 is an apocalyptic number.

16471996858 is a deficient number, since it is larger than the sum of its proper divisors (8235998432).

16471996858 is an equidigital number, since it uses as much as digits as its factorization.

16471996858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8235998431.

The product of its digits is 26127360, while the sum is 64.

The spelling of 16471996858 in words is "sixteen billion, four hundred seventy-one million, nine hundred ninety-six thousand, eight hundred fifty-eight".