29284512085 has 4 divisors (see below), whose sum is σ = 35141414508. Its totient is φ = 23427609664.

The previous prime is 29284512083. The next prime is 29284512091. The reversal of 29284512085 is 58021548292.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16450114564 + 12834397521 = 128258^2 + 113289^2 .

It is a cyclic number.

It is not a de Polignac number, because 29284512085 - 2¹ = 29284512083 is a prime.

It is a super-2 number, since 2×29284512085² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29284512083) 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 in 3 ways as a sum of consecutive naturals, for example, 2928451204 + ... + 2928451213.

It is an arithmetic number, because the mean of its divisors is an integer number (8785353627).

Almost surely, 2^29284512085 is an apocalyptic number.

It is an amenable number.

29284512085 is a deficient number, since it is larger than the sum of its proper divisors (5856902423).

29284512085 is an equidigital number, since it uses as much as digits as its factorization.

29284512085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5856902422.

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 29284512085 in words is "twenty-nine billion, two hundred eighty-four million, five hundred twelve thousand, eighty-five".