16347921696 has 72 divisors (see below), whose sum is σ = 47049584400. Its totient is φ = 5383645056.

The previous prime is 16347921679. The next prime is 16347921713. The reversal of 16347921696 is 69612974361.

16347921696 is a `hidden beast` number, since 1 + 6 + 3 + 479 + 2 + 169 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (16347921679) and next prime (16347921713).

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318046 + ... + 365853.

It is an arithmetic number, because the mean of its divisors is an integer number (653466450).

Almost surely, 2^16347921696 is an apocalyptic number.

16347921696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16347921696 is an abundant number, since it is smaller than the sum of its proper divisors (30701662704).

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

16347921696 is a wasteful number, since it uses less digits than its factorization.

16347921696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683998 (or 683987 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The spelling of 16347921696 in words is "sixteen billion, three hundred forty-seven million, nine hundred twenty-one thousand, six hundred ninety-six".