57168261787 has 16 divisors (see below), whose sum is σ = 72630648832. Its totient is φ = 43772931360.

The previous prime is 57168261781. The next prime is 57168261863. The reversal of 57168261787 is 78716286175.

It is a cyclic number.

It is not a de Polignac number, because 57168261787 - 2³ = 57168261779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57168261781) 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 15 ways as a sum of consecutive naturals, for example, 10129803 + ... + 10135444.

It is an arithmetic number, because the mean of its divisors is an integer number (4539415552).

Almost surely, 2^57168261787 is an apocalyptic number.

57168261787 is a deficient number, since it is larger than the sum of its proper divisors (15462387045).

57168261787 is a wasteful number, since it uses less digits than its factorization.

57168261787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20265298.

The product of its digits is 7902720, while the sum is 58.

The spelling of 57168261787 in words is "fifty-seven billion, one hundred sixty-eight million, two hundred sixty-one thousand, seven hundred eighty-seven".