16364421078 has 64 divisors (see below), whose sum is σ = 34580286720. Its totient is φ = 5155113600.

The previous prime is 16364421053. The next prime is 16364421083. The reversal of 16364421078 is 87012446361.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2235901 + ... + 2243207.

It is an arithmetic number, because the mean of its divisors is an integer number (540316980).

Almost surely, 2^16364421078 is an apocalyptic number.

16364421078 is an abundant number, since it is smaller than the sum of its proper divisors (18215865642).

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

16364421078 is a wasteful number, since it uses less digits than its factorization.

16364421078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7613.

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 16364421078 in words is "sixteen billion, three hundred sixty-four million, four hundred twenty-one thousand, seventy-eight".