15346232827721 has 2 divisors, whose sum is σ = 15346232827722. Its totient is φ = 15346232827720.

The previous prime is 15346232827633. The next prime is 15346232827729. The reversal of 15346232827721 is 12772823264351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15321439176121 + 24793651600 = 3914261^2 + 157460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15346232827721 is a prime.

It is not a weakly prime, because it can be changed into another prime (15346232827729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7673116413860 + 7673116413861.

It is an arithmetic number, because the mean of its divisors is an integer number (7673116413861).

Almost surely, 2^{15346232827721} is an apocalyptic number.

It is an amenable number.

15346232827721 is a deficient number, since it is larger than the sum of its proper divisors (1).

15346232827721 is an equidigital number, since it uses as much as digits as its factorization.

15346232827721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 53.

The spelling of 15346232827721 in words is "fifteen trillion, three hundred forty-six billion, two hundred thirty-two million, eight hundred twenty-seven thousand, seven hundred twenty-one".