487120191957 has 16 divisors (see below), whose sum is σ = 824753764480. Its totient is φ = 278354395296.

The previous prime is 487120191947. The next prime is 487120191989. The reversal of 487120191957 is 759191021784.

487120191957 is a `hidden beast` number, since 487 + 1 + 20 + 1 + 91 + 9 + 57 = 666.

It is not a de Polignac number, because 487120191957 - 2¹⁰ = 487120190933 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 (487120191947) 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, 1288677568 + ... + 1288677945.

It is an arithmetic number, because the mean of its divisors is an integer number (51547110280).

Almost surely, 2^487120191957 is an apocalyptic number.

It is an amenable number.

487120191957 is a deficient number, since it is larger than the sum of its proper divisors (337633572523).

487120191957 is a wasteful number, since it uses less digits than its factorization.

487120191957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577355529 (or 2577355523 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 487120191957 in words is "four hundred eighty-seven billion, one hundred twenty million, one hundred ninety-one thousand, nine hundred fifty-seven".