1285179789579 has 16 divisors (see below), whose sum is σ = 1998335923200. Its totient is φ = 734388450600.

The previous prime is 1285179789571. The next prime is 1285179789617. The reversal of 1285179789579 is 9759879715821.

It is not a de Polignac number, because 1285179789579 - 2³ = 1285179789571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1285179789571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624478947 + ... + 624481004.

It is an arithmetic number, because the mean of its divisors is an integer number (124895995200).

Almost surely, 2^{1285179789579} is an apocalyptic number.

1285179789579 is a deficient number, since it is larger than the sum of its proper divisors (713156133621).

1285179789579 is an equidigital number, since it uses as much as digits as its factorization.

1285179789579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248959975 (or 1248959961 counting only the distinct ones).

The product of its digits is 800150400, while the sum is 78.

The spelling of 1285179789579 in words is "one trillion, two hundred eighty-five billion, one hundred seventy-nine million, seven hundred eighty-nine thousand, five hundred seventy-nine".