2021402553344 has 22 divisors (see below), whose sum is σ = 4040831082804. Its totient is φ = 1010701276160.

The previous prime is 2021402553319. The next prime is 2021402553353. The reversal of 2021402553344 is 4433552041202.

It is a happy number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 987011942 + ... + 987013989.

Almost surely, 2^{2021402553344} is an apocalyptic number.

It is an amenable number.

2021402553344 is a deficient number, since it is larger than the sum of its proper divisors (2019428529460).

2021402553344 is an equidigital number, since it uses as much as digits as its factorization.

2021402553344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974025951 (or 1974025933 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 2021402553344 its reverse (4433552041202), we get a palindrome (6454954594546).

The spelling of 2021402553344 in words is "two trillion, twenty-one billion, four hundred two million, five hundred fifty-three thousand, three hundred forty-four".