57991852009917 has 24 divisors (see below), whose sum is σ = 97080927315840. Its totient is φ = 32671465918560.

The previous prime is 57991852009907. The next prime is 57991852009921. The reversal of 57991852009917 is 71990025819975.

57991852009917 is a `hidden beast` number, since 5 + 7 + 9 + 9 + 1 + 8 + 520 + 0 + 9 + 91 + 7 = 666.

It is not a de Polignac number, because 57991852009917 - 2⁷ = 57991852009789 is a prime.

It is a super-2 number, since 2×57991852009917² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57991852009907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6482429242 + ... + 6482438187.

It is an arithmetic number, because the mean of its divisors is an integer number (4045038638160).

Almost surely, 2^{57991852009917} is an apocalyptic number.

It is an amenable number.

57991852009917 is a deficient number, since it is larger than the sum of its proper divisors (39089075305923).

57991852009917 is a wasteful number, since it uses less digits than its factorization.

57991852009917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12964867513 (or 12964867510 counting only the distinct ones).

The product of its (nonzero) digits is 128595600, while the sum is 72.

The spelling of 57991852009917 in words is "fifty-seven trillion, nine hundred ninety-one billion, eight hundred fifty-two million, nine thousand, nine hundred seventeen".