20212801849 has 8 divisors (see below), whose sum is σ = 20271708000. Its totient is φ = 20153925792.

The previous prime is 20212801823. The next prime is 20212801853. The reversal of 20212801849 is 94810821202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20212801849 - 2¹¹ = 20212799801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212801549) 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 7 ways as a sum of consecutive naturals, for example, 2519757 + ... + 2527765.

It is an arithmetic number, because the mean of its divisors is an integer number (2533963500).

Almost surely, 2^20212801849 is an apocalyptic number.

It is an amenable number.

20212801849 is a deficient number, since it is larger than the sum of its proper divisors (58906151).

20212801849 is an equidigital number, since it uses as much as digits as its factorization.

20212801849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15047.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 20212801849 in words is "twenty billion, two hundred twelve million, eight hundred one thousand, eight hundred forty-nine".