16945219845 has 96 divisors (see below), whose sum is σ = 32211938304. Its totient is φ = 8531827200.

The previous prime is 16945219817. The next prime is 16945219873. The reversal of 16945219845 is 54891254961.

16945219845 is a `hidden beast` number, since 1 + 69 + 452 + 1 + 98 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (16945219817) and next prime (16945219873).

It is not a de Polignac number, because 16945219845 - 2¹³ = 16945211653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16945219791 and 16945219800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1538779 + ... + 1549751.

It is an arithmetic number, because the mean of its divisors is an integer number (335541024).

Almost surely, 2^16945219845 is an apocalyptic number.

16945219845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16945219845 is a deficient number, since it is larger than the sum of its proper divisors (15266718459).

16945219845 is a wasteful number, since it uses less digits than its factorization.

16945219845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11065 (or 11053 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 16945219845 in words is "sixteen billion, nine hundred forty-five million, two hundred nineteen thousand, eight hundred forty-five".