16696128457 has 16 divisors (see below), whose sum is σ = 17682480000. Its totient is φ = 15720718464.

The previous prime is 16696128433. The next prime is 16696128517. The reversal of 16696128457 is 75482169661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16696128457 is a prime.

It is a Duffinian number.

Its product of digits (4354560) is a multiple of the sum of its prime divisors (5040).

It is a junction number, because it is equal to n+sod(n) for n = 16696128398 and 16696128407.

It is not an unprimeable number, because it can be changed into a prime (16696128257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4645053 + ... + 4648645.

It is an arithmetic number, because the mean of its divisors is an integer number (1105155000).

Almost surely, 2^16696128457 is an apocalyptic number.

It is an amenable number.

16696128457 is a deficient number, since it is larger than the sum of its proper divisors (986351543).

16696128457 is a wasteful number, since it uses less digits than its factorization.

16696128457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040.

The product of its digits is 4354560, while the sum is 55.

The spelling of 16696128457 in words is "sixteen billion, six hundred ninety-six million, one hundred twenty-eight thousand, four hundred fifty-seven".