57123216868 has 6 divisors (see below), whose sum is σ = 99965629526. Its totient is φ = 28561608432.

The previous prime is 57123216863. The next prime is 57123216869. The reversal of 57123216868 is 86861232175.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44968595364 + 12154621504 = 212058^2 + 110248^2 .

It is not an unprimeable number, because it can be changed into a prime (57123216863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7140402105 + ... + 7140402112.

Almost surely, 2^57123216868 is an apocalyptic number.

It is an amenable number.

57123216868 is a deficient number, since it is larger than the sum of its proper divisors (42842412658).

57123216868 is a wasteful number, since it uses less digits than its factorization.

57123216868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14280804221 (or 14280804219 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The spelling of 57123216868 in words is "fifty-seven billion, one hundred twenty-three million, two hundred sixteen thousand, eight hundred sixty-eight".