16626020006557 has 16 divisors (see below), whose sum is σ = 18159268393728. Its totient is φ = 15129154575360.

The previous prime is 16626020006549. The next prime is 16626020006611. The reversal of 16626020006557 is 75560002062661.

It is not a de Polignac number, because 16626020006557 - 2³ = 16626020006549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16626020006657) 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, 6799528 + ... + 8915470.

It is an arithmetic number, because the mean of its divisors is an integer number (1134954274608).

Almost surely, 2^{16626020006557} is an apocalyptic number.

It is an amenable number.

16626020006557 is a deficient number, since it is larger than the sum of its proper divisors (1533248387171).

16626020006557 is a wasteful number, since it uses less digits than its factorization.

16626020006557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124540.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 16626020006557 in words is "sixteen trillion, six hundred twenty-six billion, twenty million, six thousand, five hundred fifty-seven".