20201320344 has 16 divisors (see below), whose sum is σ = 50503300920. Its totient is φ = 6733773440.

The previous prime is 20201320343. The next prime is 20201320351. The reversal of 20201320344 is 44302310202.

It is a self number, because there is not a number n which added to its sum of digits gives 20201320344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201320343) 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, 420860817 + ... + 420860864.

Almost surely, 2^20201320344 is an apocalyptic number.

20201320344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20201320344 is an abundant number, since it is smaller than the sum of its proper divisors (30301980576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20201320344 is a wasteful number, since it uses less digits than its factorization.

20201320344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841721690 (or 841721686 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20201320344 its reverse (44302310202), we get a palindrome (64503630546).

The spelling of 20201320344 in words is "twenty billion, two hundred one million, three hundred twenty thousand, three hundred forty-four".