57491457108 has 12 divisors (see below), whose sum is σ = 134146733280. Its totient is φ = 19163819032.

The previous prime is 57491457103. The next prime is 57491457109. The reversal of 57491457108 is 80175419475.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57491457103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2395477368 + ... + 2395477391.

It is an arithmetic number, because the mean of its divisors is an integer number (11178894440).

Almost surely, 2^57491457108 is an apocalyptic number.

It is an amenable number.

57491457108 is an abundant number, since it is smaller than the sum of its proper divisors (76655276172).

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

57491457108 is a wasteful number, since it uses less digits than its factorization.

57491457108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4790954766 (or 4790954764 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 57491457108 in words is "fifty-seven billion, four hundred ninety-one million, four hundred fifty-seven thousand, one hundred eight".