16657457225345 has 8 divisors (see below), whose sum is σ = 20005373450664. Its totient is φ = 13315015926784.

The previous prime is 16657457225317. The next prime is 16657457225407. The reversal of 16657457225345 is 54352275475661.

It is a happy number.

16657457225345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 47862938176 + 16609594287169 = 218776^2 + 4075487^2 .

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 16657457225345 - 2⁸ = 16657457225089 is a prime.

It is a super-2 number, since 2×16657457225345² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1368724994 + ... + 1368737163.

It is an arithmetic number, because the mean of its divisors is an integer number (2500671681333).

Almost surely, 2^{16657457225345} is an apocalyptic number.

It is an amenable number.

16657457225345 is a deficient number, since it is larger than the sum of its proper divisors (3347916225319).

16657457225345 is a wasteful number, since it uses less digits than its factorization.

16657457225345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737463379.

The product of its digits is 211680000, while the sum is 62.

The spelling of 16657457225345 in words is "sixteen trillion, six hundred fifty-seven billion, four hundred fifty-seven million, two hundred twenty-five thousand, three hundred forty-five".