3213649958647 has 2 divisors, whose sum is σ = 3213649958648. Its totient is φ = 3213649958646.

The previous prime is 3213649958593. The next prime is 3213649958707. The reversal of 3213649958647 is 7468599463123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3213649958647 - 2¹¹ = 3213649956599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3213649958147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606824979323 + 1606824979324.

It is an arithmetic number, because the mean of its divisors is an integer number (1606824979324).

Almost surely, 2^{3213649958647} is an apocalyptic number.

3213649958647 is a deficient number, since it is larger than the sum of its proper divisors (1).

3213649958647 is an equidigital number, since it uses as much as digits as its factorization.

3213649958647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235146240, while the sum is 67.

The spelling of 3213649958647 in words is "three trillion, two hundred thirteen billion, six hundred forty-nine million, nine hundred fifty-eight thousand, six hundred forty-seven".