16672448742481 has 27 divisors (see below), whose sum is σ = 19528827413193. Its totient is φ = 14192355277800.

The previous prime is 16672448742451. The next prime is 16672448742553. The reversal of 16672448742481 is 18424784427661.

The square root of 16672448742481 is 4083191.

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

It is not a de Polignac number, because 16672448742481 - 2⁷ = 16672448742353 is a prime.

It is a super-2 number, since 2×16672448742481² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16672448742451) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4315930956 + ... + 4315934818.

Almost surely, 2^{16672448742481} is an apocalyptic number.

16672448742481 is the 4083191-st square number.

16672448742481 is the 2041596-th centered octagonal number.

It is an amenable number.

16672448742481 is a deficient number, since it is larger than the sum of its proper divisors (2856378670712).

16672448742481 is an frugal number, since it uses more digits than its factorization.

16672448742481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8042 (or 4021 counting only the distinct ones).

The product of its digits is 115605504, while the sum is 64.

The spelling of 16672448742481 in words is "sixteen trillion, six hundred seventy-two billion, four hundred forty-eight million, seven hundred forty-two thousand, four hundred eighty-one".