29182000021 has 4 divisors (see below), whose sum is σ = 29182957452. Its totient is φ = 29181042592.

The previous prime is 29181999991. The next prime is 29182000037. The reversal of 29182000021 is 12000028192.

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 11510285796 + 17671714225 = 107286^2 + 132935^2 .

It is a cyclic number.

It is not a de Polignac number, because 29182000021 - 2⁵ = 29181999989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29182000021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29182000061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431440 + ... + 494473.

It is an arithmetic number, because the mean of its divisors is an integer number (7295739363).

Almost surely, 2^29182000021 is an apocalyptic number.

It is an amenable number.

29182000021 is a deficient number, since it is larger than the sum of its proper divisors (957431).

29182000021 is an equidigital number, since it uses as much as digits as its factorization.

29182000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957430.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 29182000021 in words is "twenty-nine billion, one hundred eighty-two million, twenty-one", and thus it is an aban number.