2053802257921 has 8 divisors (see below), whose sum is σ = 2130194692584. Its totient is φ = 1978508995200.

The previous prime is 2053802257817. The next prime is 2053802257931. The reversal of 2053802257921 is 1297522083502.

It can be written as a sum of positive squares in 4 ways, for example, as 1054392170896 + 999410087025 = 1026836^2 + 999705^2 .

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 2053802257921 - 2²³ = 2053793869313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2053802257931) 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, 274789180 + ... + 274796653.

It is an arithmetic number, because the mean of its divisors is an integer number (266274336573).

Almost surely, 2^{2053802257921} is an apocalyptic number.

It is an amenable number.

2053802257921 is a deficient number, since it is larger than the sum of its proper divisors (76392434663).

2053802257921 is a wasteful number, since it uses less digits than its factorization.

2053802257921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549585971.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 2053802257921 in words is "two trillion, fifty-three billion, eight hundred two million, two hundred fifty-seven thousand, nine hundred twenty-one".