16404045060621 has 16 divisors (see below), whose sum is σ = 22597226201088. Its totient is φ = 10574059974000.

The previous prime is 16404045060617. The next prime is 16404045060647. The reversal of 16404045060621 is 12606054040461.

It is not a de Polignac number, because 16404045060621 - 2² = 16404045060617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16404045060621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16404045060661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76516581 + ... + 76730666.

It is an arithmetic number, because the mean of its divisors is an integer number (1412326637568).

Almost surely, 2^{16404045060621} is an apocalyptic number.

It is an amenable number.

16404045060621 is a deficient number, since it is larger than the sum of its proper divisors (6193181140467).

16404045060621 is a wasteful number, since it uses less digits than its factorization.

16404045060621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153248432.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 16404045060621 in words is "sixteen trillion, four hundred four billion, forty-five million, sixty thousand, six hundred twenty-one".