985779295442 has 54 divisors (see below), whose sum is σ = 1570648088997. Its totient is φ = 464000539632.

The previous prime is 985779295433. The next prime is 985779295463. The reversal of 985779295442 is 244592977589.

It can be written as a sum of positive squares in 2 ways, for example, as 985193219761 + 586075681 = 992569^2 + 24209^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=702061.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1750939853 + ... + 1750940415.

Almost surely, 2^985779295442 is an apocalyptic number.

985779295442 is a deficient number, since it is larger than the sum of its proper divisors (584868793555).

985779295442 is an frugal number, since it uses more digits than its factorization.

985779295442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 637 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 71.

The spelling of 985779295442 in words is "nine hundred eighty-five billion, seven hundred seventy-nine million, two hundred ninety-five thousand, four hundred forty-two".