285939566420 has 24 divisors (see below), whose sum is σ = 600738060384. Its totient is φ = 114325355936.

The previous prime is 285939566417. The next prime is 285939566443. The reversal of 285939566420 is 24665939582.

It is a super-2 number, since 2×285939566420² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 285939566420.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 3107942 + ... + 3198621.

It is an arithmetic number, because the mean of its divisors is an integer number (25030752516).

Almost surely, 2^285939566420 is an apocalyptic number.

285939566420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285939566420 is an abundant number, since it is smaller than the sum of its proper divisors (314798493964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285939566420 is a wasteful number, since it uses less digits than its factorization.

285939566420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308839 (or 6308837 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 59.

The spelling of 285939566420 in words is "two hundred eighty-five billion, nine hundred thirty-nine million, five hundred sixty-six thousand, four hundred twenty".