2057725815391 has 16 divisors (see below), whose sum is σ = 2196713088000. Its totient is φ = 1920782014848.

The previous prime is 2057725815373. The next prime is 2057725815403. The reversal of 2057725815391 is 1935185277502.

It is not a de Polignac number, because 2057725815391 - 2⁵ = 2057725815359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057725815191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552160 + ... + 2102458.

It is an arithmetic number, because the mean of its divisors is an integer number (137294568000).

Almost surely, 2^{2057725815391} is an apocalyptic number.

2057725815391 is a deficient number, since it is larger than the sum of its proper divisors (138987272609).

2057725815391 is a wasteful number, since it uses less digits than its factorization.

2057725815391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550958.

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 2057725815391 in words is "two trillion, fifty-seven billion, seven hundred twenty-five million, eight hundred fifteen thousand, three hundred ninety-one".