57238369639 has 4 divisors (see below), whose sum is σ = 62441857800. Its totient is φ = 52034881480.

The previous prime is 57238369633. The next prime is 57238369663. The reversal of 57238369639 is 93696383275.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57238369639 - 2⁷ = 57238369511 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 (57238369633) 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, 2601744064 + ... + 2601744085.

It is an arithmetic number, because the mean of its divisors is an integer number (15610464450).

Almost surely, 2^57238369639 is an apocalyptic number.

57238369639 is a deficient number, since it is larger than the sum of its proper divisors (5203488161).

57238369639 is a wasteful number, since it uses less digits than its factorization.

57238369639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5203488160.

The product of its digits is 44089920, while the sum is 61.

The spelling of 57238369639 in words is "fifty-seven billion, two hundred thirty-eight million, three hundred sixty-nine thousand, six hundred thirty-nine".