4857942497557 has 2 divisors, whose sum is σ = 4857942497558. Its totient is φ = 4857942497556.

The previous prime is 4857942497503. The next prime is 4857942497599. The reversal of 4857942497557 is 7557942497584.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4644137060676 + 213805436881 = 2155026^2 + 462391^2 .

It is a cyclic number.

It is not a de Polignac number, because 4857942497557 - 2³⁵ = 4823582759189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4857942497657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2428971248778 + 2428971248779.

It is an arithmetic number, because the mean of its divisors is an integer number (2428971248779).

Almost surely, 2^{4857942497557} is an apocalyptic number.

It is an amenable number.

4857942497557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4857942497557 is an equidigital number, since it uses as much as digits as its factorization.

4857942497557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224000, while the sum is 76.

The spelling of 4857942497557 in words is "four trillion, eight hundred fifty-seven billion, nine hundred forty-two million, four hundred ninety-seven thousand, five hundred fifty-seven".