16985297648774 has 256 divisors, whose sum is σ = 34169856000000. Its totient is φ = 6273805539456.

The previous prime is 16985297648771. The next prime is 16985297648789. The reversal of 16985297648774 is 47784679258961.

It is a junction number, because it is equal to n+sod(n) for n = 16985297648692 and 16985297648701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16985297648771) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12141026927 + ... + 12141028325.

It is an arithmetic number, because the mean of its divisors is an integer number (133476000000).

Almost surely, 2^{16985297648774} is an apocalyptic number.

16985297648774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16985297648774 is an abundant number, since it is smaller than the sum of its proper divisors (17184558351226).

16985297648774 is a wasteful number, since it uses less digits than its factorization.

16985297648774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440 (or 2426 counting only the distinct ones).

The product of its digits is 10241925120, while the sum is 83.

The spelling of 16985297648774 in words is "sixteen trillion, nine hundred eighty-five billion, two hundred ninety-seven million, six hundred forty-eight thousand, seven hundred seventy-four".