16628273137 has 12 divisors (see below), whose sum is σ = 19374377520. Its totient is φ = 14229754056.

The previous prime is 16628273113. The next prime is 16628273171. The reversal of 16628273137 is 73137282661.

It is a happy number.

It is not a de Polignac number, because 16628273137 - 2⁷ = 16628273009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16628273197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243783 + ... + 304444.

It is an arithmetic number, because the mean of its divisors is an integer number (1614531460).

Almost surely, 2^16628273137 is an apocalyptic number.

It is an amenable number.

16628273137 is a deficient number, since it is larger than the sum of its proper divisors (2746104383).

16628273137 is an equidigital number, since it uses as much as digits as its factorization.

16628273137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548860 (or 548853 counting only the distinct ones).

The product of its digits is 508032, while the sum is 46.

The spelling of 16628273137 in words is "sixteen billion, six hundred twenty-eight million, two hundred seventy-three thousand, one hundred thirty-seven".