16945623936 has 192 divisors, whose sum is σ = 54349822800. Its totient is φ = 5036359680.

The previous prime is 16945623913. The next prime is 16945623943. The reversal of 16945623936 is 63932654961.

16945623936 is a `hidden beast` number, since 1 + 6 + 9 + 4 + 5 + 623 + 9 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×16945623936² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349326 + ... + 394866.

Almost surely, 2^16945623936 is an apocalyptic number.

16945623936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16945623936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27174911400).

16945623936 is an abundant number, since it is smaller than the sum of its proper divisors (37404198864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16945623936 is a wasteful number, since it uses less digits than its factorization.

16945623936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45597 (or 45582 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 54.

The spelling of 16945623936 in words is "sixteen billion, nine hundred forty-five million, six hundred twenty-three thousand, nine hundred thirty-six".