3291064028641 has 3 divisors (see below), whose sum is σ = 3291065842771. Its totient is φ = 3291062214512.

The previous prime is 3291064028633. The next prime is 3291064028689. The reversal of 3291064028641 is 1468204601923.

The square root of 3291064028641 is 1814129.

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., 2036126371041 + 1254937657600 = 1426929^2 + 1120240^2 .

It is not a de Polignac number, because 3291064028641 - 2³ = 3291064028633 is a prime.

It is a super-2 number, since 2×3291064028641² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3291064028591 and 3291064028600.

It is not an unprimeable number, because it can be changed into a prime (3291064028141) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 907065 + ... + 2721193.

Almost surely, 2^{3291064028641} is an apocalyptic number.

3291064028641 is the 1814129-th square number.

3291064028641 is the 907065-th centered octagonal number.

It is an amenable number.

3291064028641 is a deficient number, since it is larger than the sum of its proper divisors (1814130).

3291064028641 is an frugal number, since it uses more digits than its factorization.

3291064028641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628258 (or 1814129 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 3291064028641 in words is "three trillion, two hundred ninety-one billion, sixty-four million, twenty-eight thousand, six hundred forty-one".