3218249652947 has 4 divisors (see below), whose sum is σ = 3677999603376. Its totient is φ = 2758499702520.

The previous prime is 3218249652931. The next prime is 3218249653001. The reversal of 3218249652947 is 7492569428123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3218249652947 - 2⁴ = 3218249652931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3218249652947.

It is not an unprimeable number, because it can be changed into a prime (3218249657947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229874975204 + ... + 229874975217.

It is an arithmetic number, because the mean of its divisors is an integer number (919499900844).

Almost surely, 2^{3218249652947} is an apocalyptic number.

3218249652947 is a deficient number, since it is larger than the sum of its proper divisors (459749950429).

3218249652947 is an equidigital number, since it uses as much as digits as its factorization.

3218249652947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459749950428.

The product of its digits is 52254720, while the sum is 62.

The spelling of 3218249652947 in words is "three trillion, two hundred eighteen billion, two hundred forty-nine million, six hundred fifty-two thousand, nine hundred forty-seven".