16402322646 has 24 divisors (see below), whose sum is σ = 35541085320. Its totient is φ = 5467022496.

The previous prime is 16402322633. The next prime is 16402322689. The reversal of 16402322646 is 64622320461.

16402322646 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 2 + 3 + 2 + 2 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 16402322646.

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 in 11 ways as a sum of consecutive naturals, for example, 287386 + ... + 339698.

It is an arithmetic number, because the mean of its divisors is an integer number (1480878555).

Almost surely, 2^16402322646 is an apocalyptic number.

16402322646 is an abundant number, since it is smaller than the sum of its proper divisors (19138762674).

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

16402322646 is a wasteful number, since it uses less digits than its factorization.

16402322646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69740 (or 69737 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 16402322646 in words is "sixteen billion, four hundred two million, three hundred twenty-two thousand, six hundred forty-six".