2057731153921 has 8 divisors (see below), whose sum is σ = 2096768237760. Its totient is φ = 2018832746352.

The previous prime is 2057731153909. The next prime is 2057731153993. The reversal of 2057731153921 is 1293511377502.

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 2057731153921 - 2¹⁷ = 2057731022849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2057731153321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34639110 + ... + 34698463.

It is an arithmetic number, because the mean of its divisors is an integer number (262096029720).

Almost surely, 2^{2057731153921} is an apocalyptic number.

It is an amenable number.

2057731153921 is a deficient number, since it is larger than the sum of its proper divisors (39037083839).

2057731153921 is an equidigital number, since it uses as much as digits as its factorization.

2057731153921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69338135.

The product of its (nonzero) digits is 396900, while the sum is 46.

The spelling of 2057731153921 in words is "two trillion, fifty-seven billion, seven hundred thirty-one million, one hundred fifty-three thousand, nine hundred twenty-one".