16626540554 has 16 divisors (see below), whose sum is σ = 27429712128. Its totient is φ = 7510515312.

The previous prime is 16626540533. The next prime is 16626540559. The reversal of 16626540554 is 45504562661.

It is not an unprimeable number, because it can be changed into a prime (16626540559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6801782 + ... + 6804225.

It is an arithmetic number, because the mean of its divisors is an integer number (1714357008).

Almost surely, 2^16626540554 is an apocalyptic number.

16626540554 is a deficient number, since it is larger than the sum of its proper divisors (10803171574).

16626540554 is a wasteful number, since it uses less digits than its factorization.

16626540554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13606069.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 16626540554 in words is "sixteen billion, six hundred twenty-six million, five hundred forty thousand, five hundred fifty-four".