57138021089 has 4 divisors (see below), whose sum is σ = 57138643860. Its totient is φ = 57137398320.

The previous prime is 57138021077. The next prime is 57138021103. The reversal of 57138021089 is 98012083175.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24528884689 + 32609136400 = 156617^2 + 180580^2 .

It is a cyclic number.

It is not a de Polignac number, because 57138021089 - 2¹² = 57138016993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57138021049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143642 + ... + 367299.

It is an arithmetic number, because the mean of its divisors is an integer number (14284660965).

Almost surely, 2^57138021089 is an apocalyptic number.

It is an amenable number.

57138021089 is a deficient number, since it is larger than the sum of its proper divisors (622771).

57138021089 is a wasteful number, since it uses less digits than its factorization.

57138021089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622770.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 57138021089 in words is "fifty-seven billion, one hundred thirty-eight million, twenty-one thousand, eighty-nine".