16921421402 has 8 divisors (see below), whose sum is σ = 26485703136. Its totient is φ = 8092853692.

The previous prime is 16921421399. The next prime is 16921421417. The reversal of 16921421402 is 20412412961.

16921421402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183928448 + ... + 183928539.

It is an arithmetic number, because the mean of its divisors is an integer number (3310712892).

Almost surely, 2^16921421402 is an apocalyptic number.

16921421402 is a deficient number, since it is larger than the sum of its proper divisors (9564281734).

16921421402 is a wasteful number, since it uses less digits than its factorization.

16921421402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367857012.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 16921421402 in words is "sixteen billion, nine hundred twenty-one million, four hundred twenty-one thousand, four hundred two".