285998729873 has 16 divisors (see below), whose sum is σ = 297084948480. Its totient is φ = 275152137936.

The previous prime is 285998729869. The next prime is 285998729897. The reversal of 285998729873 is 378927899582.

It is a cyclic number.

It is not a de Polignac number, because 285998729873 - 2² = 285998729869 is a prime.

It is a super-2 number, since 2×285998729873² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 285998729794 and 285998729803.

It is not an unprimeable number, because it can be changed into a prime (285998729803) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 673190 + ... + 1012512.

It is an arithmetic number, because the mean of its divisors is an integer number (18567809280).

Almost surely, 2^285998729873 is an apocalyptic number.

It is an amenable number.

285998729873 is a deficient number, since it is larger than the sum of its proper divisors (11086218607).

285998729873 is a wasteful number, since it uses less digits than its factorization.

285998729873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339676.

The product of its digits is 1097349120, while the sum is 77.

The spelling of 285998729873 in words is "two hundred eighty-five billion, nine hundred ninety-eight million, seven hundred twenty-nine thousand, eight hundred seventy-three".