166724627753 has 2 divisors, whose sum is σ = 166724627754. Its totient is φ = 166724627752.

The previous prime is 166724627701. The next prime is 166724627767. The reversal of 166724627753 is 357726427661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166310627344 + 414000409 = 407812^2 + 20347^2 .

It is a cyclic number.

It is not a de Polignac number, because 166724627753 - 2²⁴ = 166707850537 is a prime.

It is not a weakly prime, because it can be changed into another prime (166724620753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83362313876 + 83362313877.

It is an arithmetic number, because the mean of its divisors is an integer number (83362313877).

Almost surely, 2^166724627753 is an apocalyptic number.

It is an amenable number.

166724627753 is a deficient number, since it is larger than the sum of its proper divisors (1).

166724627753 is an equidigital number, since it uses as much as digits as its factorization.

166724627753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17781120, while the sum is 56.

The spelling of 166724627753 in words is "one hundred sixty-six billion, seven hundred twenty-four million, six hundred twenty-seven thousand, seven hundred fifty-three".