16406606554 has 16 divisors (see below), whose sum is σ = 26535061728. Its totient is φ = 7563113712.

The previous prime is 16406606507. The next prime is 16406606561. The reversal of 16406606554 is 45560660461.

It is a self number, because there is not a number n which added to its sum of digits gives 16406606554.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360012 + ... + 403015.

It is an arithmetic number, because the mean of its divisors is an integer number (1658441358).

Almost surely, 2^16406606554 is an apocalyptic number.

16406606554 is a deficient number, since it is larger than the sum of its proper divisors (10128455174).

16406606554 is a wasteful number, since it uses less digits than its factorization.

16406606554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763869.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 16406606554 in words is "sixteen billion, four hundred six million, six hundred six thousand, five hundred fifty-four".