16325179636249 has 9 divisors (see below), whose sum is σ = 17944254568639. Its totient is φ = 14841031992160.

The previous prime is 16325179636231. The next prime is 16325179636291. The reversal of 16325179636249 is 94263697152361.

The square root of 16325179636249 is 4040443.

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

It can be written as a sum of positive squares in only one way, i.e., 7221876896025 + 9103302740224 = 2687355^2 + 3017168^2 .

It is not a de Polignac number, because 16325179636249 - 2²³ = 16325171247641 is a prime.

It is a super-2 number, since 2×16325179636249² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16325179636349) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44261217 + ... + 44628529.

Almost surely, 2^{16325179636249} is an apocalyptic number.

16325179636249 is the 4040443-rd square number.

16325179636249 is the 2020222-nd centered octagonal number.

It is an amenable number.

16325179636249 is a deficient number, since it is larger than the sum of its proper divisors (1619074932390).

16325179636249 is an frugal number, since it uses more digits than its factorization.

16325179636249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734648 (or 367324 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 64.

The spelling of 16325179636249 in words is "sixteen trillion, three hundred twenty-five billion, one hundred seventy-nine million, six hundred thirty-six thousand, two hundred forty-nine".