16947868924 has 72 divisors (see below), whose sum is σ = 35297742480. Its totient is φ = 7097497344.

The previous prime is 16947868897. The next prime is 16947868943. The reversal of 16947868924 is 42986874961.

It is a super-2 number, since 2×16947868924² (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, 1554139 + ... + 1565005.

Almost surely, 2^16947868924 is an apocalyptic number.

16947868924 is a gapful number since it is divisible by the number (14) 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 16947868924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17648871240).

16947868924 is an abundant number, since it is smaller than the sum of its proper divisors (18349873556).

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

16947868924 is a wasteful number, since it uses less digits than its factorization.

16947868924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11067 (or 11058 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 64.

The spelling of 16947868924 in words is "sixteen billion, nine hundred forty-seven million, eight hundred sixty-eight thousand, nine hundred twenty-four".