17379364365721 has 2 divisors, whose sum is σ = 17379364365722. Its totient is φ = 17379364365720.

The previous prime is 17379364365683. The next prime is 17379364365739. The reversal of 17379364365721 is 12756346397371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16191288345600 + 1188076020121 = 4023840^2 + 1089989^2 .

It is a cyclic number.

It is not a de Polignac number, because 17379364365721 - 2⁴³ = 8583271343513 is a prime.

It is not a weakly prime, because it can be changed into another prime (17379364365761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8689682182860 + 8689682182861.

It is an arithmetic number, because the mean of its divisors is an integer number (8689682182861).

Almost surely, 2^{17379364365721} is an apocalyptic number.

It is an amenable number.

17379364365721 is a deficient number, since it is larger than the sum of its proper divisors (1).

17379364365721 is an equidigital number, since it uses as much as digits as its factorization.

17379364365721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120022560, while the sum is 64.

The spelling of 17379364365721 in words is "seventeen trillion, three hundred seventy-nine billion, three hundred sixty-four million, three hundred sixty-five thousand, seven hundred twenty-one".