190432721613817 has 2 divisors, whose sum is σ = 190432721613818. Its totient is φ = 190432721613816.

The previous prime is 190432721613661. The next prime is 190432721613829. The reversal of 190432721613817 is 718316127234091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141335457394681 + 49097264219136 = 11888459^2 + 7006944^2 .

It is a cyclic number.

It is not a de Polignac number, because 190432721613817 - 2¹⁵ = 190432721581049 is a prime.

It is a super-2 number, since 2×190432721613817² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190432721613857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95216360806908 + 95216360806909.

It is an arithmetic number, because the mean of its divisors is an integer number (95216360806909).

Almost surely, 2^{190432721613817} is an apocalyptic number.

It is an amenable number.

190432721613817 is a deficient number, since it is larger than the sum of its proper divisors (1).

190432721613817 is an equidigital number, since it uses as much as digits as its factorization.

190432721613817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 190432721613817 in words is "one hundred ninety trillion, four hundred thirty-two billion, seven hundred twenty-one million, six hundred thirteen thousand, eight hundred seventeen".