3280014388561 has 3 divisors (see below), whose sum is σ = 3280016199643. Its totient is φ = 3280012577480.

The previous prime is 3280014388531. The next prime is 3280014388577. The reversal of 3280014388561 is 1658834100823.

It is a happy number.

The square root of 3280014388561 is 1811081.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2317339442961 + 962674945600 = 1522281^2 + 981160^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3280014388561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3280014388531) 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 2 ways as a sum of consecutive naturals, for example, 905541 + ... + 2716621.

Almost surely, 2^{3280014388561} is an apocalyptic number.

3280014388561 is the 1811081-st square number.

3280014388561 is the 905541-st centered octagonal number.

It is an amenable number.

3280014388561 is a deficient number, since it is larger than the sum of its proper divisors (1811082).

3280014388561 is an frugal number, since it uses more digits than its factorization.

3280014388561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622162 (or 1811081 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

Multiplying 3280014388561 by its sum of digits (49), we get a square (160720705039489 = 12677567²).

The spelling of 3280014388561 in words is "three trillion, two hundred eighty billion, fourteen million, three hundred eighty-eight thousand, five hundred sixty-one".