16985478490 has 16 divisors (see below), whose sum is σ = 30603306240. Its totient is φ = 6787648080.

The previous prime is 16985478463. The next prime is 16985478511. The reversal of 16985478490 is 9487458961.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807006 + ... + 827785.

It is an arithmetic number, because the mean of its divisors is an integer number (1912706640).

Almost surely, 2^16985478490 is an apocalyptic number.

16985478490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16985478490 is a deficient number, since it is larger than the sum of its proper divisors (13617827750).

16985478490 is a wasteful number, since it uses less digits than its factorization.

16985478490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635837.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 16985478490 in words is "sixteen billion, nine hundred eighty-five million, four hundred seventy-eight thousand, four hundred ninety".