16626642618 has 16 divisors (see below), whose sum is σ = 33816900960. Its totient is φ = 5448278256.

The previous prime is 16626642611. The next prime is 16626642619. The reversal of 16626642618 is 81624662661.

It is not an unprimeable number, because it can be changed into a prime (16626642611) 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, 23483605 + ... + 23484312.

It is an arithmetic number, because the mean of its divisors is an integer number (2113556310).

Almost surely, 2^16626642618 is an apocalyptic number.

16626642618 is an abundant number, since it is smaller than the sum of its proper divisors (17190258342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16626642618 is a wasteful number, since it uses less digits than its factorization.

16626642618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46967981.

The product of its digits is 995328, while the sum is 48.

The spelling of 16626642618 in words is "sixteen billion, six hundred twenty-six million, six hundred forty-two thousand, six hundred eighteen".