1957857564545 has 48 divisors (see below), whose sum is σ = 2427127718400. Its totient is φ = 1515980793600.

The previous prime is 1957857564539. The next prime is 1957857564547. The reversal of 1957857564545 is 5454657587591.

It is not a de Polignac number, because 1957857564545 - 2⁴ = 1957857564529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1957857564547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 365883620 + ... + 365888970.

It is an arithmetic number, because the mean of its divisors is an integer number (50565160800).

Almost surely, 2^{1957857564545} is an apocalyptic number.

It is an amenable number.

1957857564545 is a deficient number, since it is larger than the sum of its proper divisors (469270153855).

1957857564545 is a wasteful number, since it uses less digits than its factorization.

1957857564545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810 (or 5757 counting only the distinct ones).

The product of its digits is 1058400000, while the sum is 71.

The spelling of 1957857564545 in words is "one trillion, nine hundred fifty-seven billion, eight hundred fifty-seven million, five hundred sixty-four thousand, five hundred forty-five".