16281971896 has 8 divisors (see below), whose sum is σ = 30528697320. Its totient is φ = 8140985944.

The previous prime is 16281971879. The next prime is 16281971917. The reversal of 16281971896 is 69817918261.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 16281971896.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1017623236 + ... + 1017623251.

It is an arithmetic number, because the mean of its divisors is an integer number (3816087165).

Almost surely, 2^16281971896 is an apocalyptic number.

It is an amenable number.

16281971896 is a deficient number, since it is larger than the sum of its proper divisors (14246725424).

16281971896 is a wasteful number, since it uses less digits than its factorization.

16281971896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035246493 (or 2035246489 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 58.

The spelling of 16281971896 in words is "sixteen billion, two hundred eighty-one million, nine hundred seventy-one thousand, eight hundred ninety-six".