2057558091804 has 48 divisors (see below), whose sum is σ = 5334720468000. Its totient is φ = 685812763008.

The previous prime is 2057558091803. The next prime is 2057558091851. The reversal of 2057558091804 is 4081908557502.

2057558091804 is a `hidden beast` number, since 2 + 0 + 5 + 7 + 558 + 0 + 9 + 1 + 80 + 4 = 666.

It is a super-2 number, since 2×2057558091804² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057558091803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1338574 + ... + 2430410.

It is an arithmetic number, because the mean of its divisors is an integer number (111140009750).

Almost surely, 2^{2057558091804} is an apocalyptic number.

It is an amenable number.

2057558091804 is an abundant number, since it is smaller than the sum of its proper divisors (3277162376196).

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

2057558091804 is a wasteful number, since it uses less digits than its factorization.

2057558091804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109299 (or 1109291 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 54.

The spelling of 2057558091804 in words is "two trillion, fifty-seven billion, five hundred fifty-eight million, ninety-one thousand, eight hundred four".