6453681233891 has 2 divisors, whose sum is σ = 6453681233892. Its totient is φ = 6453681233890.

The previous prime is 6453681233809. The next prime is 6453681234023. The reversal of 6453681233891 is 1983321863546.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6453681233891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6453681233891.

It is not a weakly prime, because it can be changed into another prime (6453681230891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3226840616945 + 3226840616946.

It is an arithmetic number, because the mean of its divisors is an integer number (3226840616946).

Almost surely, 2^{6453681233891} is an apocalyptic number.

6453681233891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6453681233891 is an equidigital number, since it uses as much as digits as its factorization.

6453681233891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22394880, while the sum is 59.

The spelling of 6453681233891 in words is "six trillion, four hundred fifty-three billion, six hundred eighty-one million, two hundred thirty-three thousand, eight hundred ninety-one".