16649782014525 has 24 divisors (see below), whose sum is σ = 30030152289504. Its totient is φ = 8072621582400.

The previous prime is 16649782014461. The next prime is 16649782014529. The reversal of 16649782014525 is 52541028794661.

It is not a de Polignac number, because 16649782014525 - 2⁶ = 16649782014461 is a prime.

It is a super-2 number, since 2×16649782014525² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16649782014529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10090776154 + ... + 10090777803.

It is an arithmetic number, because the mean of its divisors is an integer number (1251256345396).

Almost surely, 2^{16649782014525} is an apocalyptic number.

16649782014525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16649782014525 is a deficient number, since it is larger than the sum of its proper divisors (13380370274979).

16649782014525 is a wasteful number, since it uses less digits than its factorization.

16649782014525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20181553981 (or 20181553976 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 16649782014525 in words is "sixteen trillion, six hundred forty-nine billion, seven hundred eighty-two million, fourteen thousand, five hundred twenty-five".