20146671529 has 2 divisors, whose sum is σ = 20146671530. Its totient is φ = 20146671528.

The previous prime is 20146671521. The next prime is 20146671547. The reversal of 20146671529 is 92517664102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11475337129 + 8671334400 = 107123^2 + 93120^2 .

It is a cyclic number.

It is not a de Polignac number, because 20146671529 - 2³ = 20146671521 is a prime.

It is not a weakly prime, because it can be changed into another prime (20146671521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10073335764 + 10073335765.

It is an arithmetic number, because the mean of its divisors is an integer number (10073335765).

Almost surely, 2^20146671529 is an apocalyptic number.

It is an amenable number.

20146671529 is a deficient number, since it is larger than the sum of its proper divisors (1).

20146671529 is an equidigital number, since it uses as much as digits as its factorization.

20146671529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 20146671529 in words is "twenty billion, one hundred forty-six million, six hundred seventy-one thousand, five hundred twenty-nine".