20895220329 has 8 divisors (see below), whose sum is σ = 27893503680. Its totient is φ = 13913541936.

The previous prime is 20895220327. The next prime is 20895220337. The reversal of 20895220329 is 92302259802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20895220329 - 2¹ = 20895220327 is a prime.

It is a super-2 number, since 2×20895220329² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20895220327) 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 7 ways as a sum of consecutive naturals, for example, 4148302 + ... + 4153335.

It is an arithmetic number, because the mean of its divisors is an integer number (3486687960).

Almost surely, 2^20895220329 is an apocalyptic number.

It is an amenable number.

20895220329 is a deficient number, since it is larger than the sum of its proper divisors (6998283351).

20895220329 is an equidigital number, since it uses as much as digits as its factorization.

20895220329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8302479.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 20895220329 in words is "twenty billion, eight hundred ninety-five million, two hundred twenty thousand, three hundred twenty-nine".