16600000555 has 4 divisors (see below), whose sum is σ = 19920000672. Its totient is φ = 13280000440.

The previous prime is 16600000513. The next prime is 16600000589. The reversal of 16600000555 is 55500000661.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16600000555 - 2³¹ = 14452516907 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660000051 + ... + 1660000060.

It is an arithmetic number, because the mean of its divisors is an integer number (4980000168).

Almost surely, 2^16600000555 is an apocalyptic number.

16600000555 is a deficient number, since it is larger than the sum of its proper divisors (3320000117).

16600000555 is an equidigital number, since it uses as much as digits as its factorization.

16600000555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320000116.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 16600000555 in words is "sixteen billion, six hundred million, five hundred fifty-five", and thus it is an aban number.