16321390694 has 24 divisors (see below), whose sum is σ = 29397849408. Its totient is φ = 6769239120.

The previous prime is 16321390669. The next prime is 16321390747. The reversal of 16321390694 is 49609312361.

16321390694 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2683169 + ... + 2689244.

It is an arithmetic number, because the mean of its divisors is an integer number (1224910392).

Almost surely, 2^16321390694 is an apocalyptic number.

16321390694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16321390694 is a deficient number, since it is larger than the sum of its proper divisors (13076458714).

16321390694 is a wasteful number, since it uses less digits than its factorization.

16321390694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372460 (or 5372453 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 16321390694 in words is "sixteen billion, three hundred twenty-one million, three hundred ninety thousand, six hundred ninety-four".