16468946658025 has 27 divisors (see below), whose sum is σ = 20477377346949. Its totient is φ = 13139201718720.

The previous prime is 16468946657983. The next prime is 16468946658137. The reversal of 16468946658025 is 52085664986461.

It is a happy number.

The square root of 16468946658025 is 4058195.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7786895831001 + 8682050827024 = 2790501^2 + 2946532^2 .

It is not a de Polignac number, because 16468946658025 - 2¹¹ = 16468946655977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9394720549 + ... + 9394722301.

Almost surely, 2^{16468946658025} is an apocalyptic number.

16468946658025 is the 4058195-th square number.

16468946658025 is the 2029098-th centered octagonal number.

It is an amenable number.

16468946658025 is a deficient number, since it is larger than the sum of its proper divisors (4008430688924).

16468946658025 is an frugal number, since it uses more digits than its factorization.

16468946658025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 597196800, while the sum is 70.

The spelling of 16468946658025 in words is "sixteen trillion, four hundred sixty-eight billion, nine hundred forty-six million, six hundred fifty-eight thousand, twenty-five".