16628471393 has 8 divisors (see below), whose sum is σ = 17583530496. Its totient is φ = 15699578400.

The previous prime is 16628471381. The next prime is 16628471399. The reversal of 16628471393 is 39317482661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16628471393 - 2⁶ = 16628471329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16628471399) 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, 6540221 + ... + 6542762.

It is an arithmetic number, because the mean of its divisors is an integer number (2197941312).

Almost surely, 2^16628471393 is an apocalyptic number.

It is an amenable number.

16628471393 is a deficient number, since it is larger than the sum of its proper divisors (955059103).

16628471393 is a wasteful number, since it uses less digits than its factorization.

16628471393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13083055.

The product of its digits is 1306368, while the sum is 50.

The spelling of 16628471393 in words is "sixteen billion, six hundred twenty-eight million, four hundred seventy-one thousand, three hundred ninety-three".