2181324637607 has 2 divisors, whose sum is σ = 2181324637608. Its totient is φ = 2181324637606.

The previous prime is 2181324637601. The next prime is 2181324637633. The reversal of 2181324637607 is 7067364231812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2181324637607 - 2¹⁶ = 2181324572071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2181324637601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090662318803 + 1090662318804.

It is an arithmetic number, because the mean of its divisors is an integer number (1090662318804).

Almost surely, 2^{2181324637607} is an apocalyptic number.

2181324637607 is a deficient number, since it is larger than the sum of its proper divisors (1).

2181324637607 is an equidigital number, since it uses as much as digits as its factorization.

2181324637607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 2181324637607 in words is "two trillion, one hundred eighty-one billion, three hundred twenty-four million, six hundred thirty-seven thousand, six hundred seven".