29382282821 has 4 divisors (see below), whose sum is σ = 29579479500. Its totient is φ = 29185086144.

The previous prime is 29382282767. The next prime is 29382282823. The reversal of 29382282821 is 12828228392.

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 2433448900 + 26948833921 = 49330^2 + 164161^2 .

It is a cyclic number.

It is not a de Polignac number, because 29382282821 - 2⁶ = 29382282757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29382282823) 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 3 ways as a sum of consecutive naturals, for example, 98598116 + ... + 98598413.

It is an arithmetic number, because the mean of its divisors is an integer number (7394869875).

Almost surely, 2^29382282821 is an apocalyptic number.

It is an amenable number.

29382282821 is a deficient number, since it is larger than the sum of its proper divisors (197196679).

29382282821 is a wasteful number, since it uses less digits than its factorization.

29382282821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197196678.

The product of its digits is 442368, while the sum is 47.

The spelling of 29382282821 in words is "twenty-nine billion, three hundred eighty-two million, two hundred eighty-two thousand, eight hundred twenty-one".