57821697911 has 8 divisors (see below), whose sum is σ = 58490994240. Its totient is φ = 57152837632.

The previous prime is 57821697889. The next prime is 57821697931. The reversal of 57821697911 is 11979612875.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57821697911 - 2³⁴ = 40641828727 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 (57821697931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161591 + ... + 376503.

It is an arithmetic number, because the mean of its divisors is an integer number (7311374280).

Almost surely, 2^57821697911 is an apocalyptic number.

57821697911 is a deficient number, since it is larger than the sum of its proper divisors (669296329).

57821697911 is a wasteful number, since it uses less digits than its factorization.

57821697911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218025.

The product of its digits is 1905120, while the sum is 56.

The spelling of 57821697911 in words is "fifty-seven billion, eight hundred twenty-one million, six hundred ninety-seven thousand, nine hundred eleven".