56658994993 has 8 divisors (see below), whose sum is σ = 58208463080. Its totient is φ = 55110481920.

The previous prime is 56658994981. The next prime is 56658994999. The reversal of 56658994993 is 39949985665.

It can be written as a sum of positive squares in 4 ways, for example, as 8022426624 + 48636568369 = 89568^2 + 220537^2 .

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 56658994993 - 2¹³ = 56658986801 is a prime.

It is the 238032-nd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56658994999) by changing a digit.

It is a nontrivial repunit in base 238031.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117648 + ... + 356593.

It is an arithmetic number, because the mean of its divisors is an integer number (7276057885).

Almost surely, 2^56658994993 is an apocalyptic number.

It is an amenable number.

56658994993 is a deficient number, since it is larger than the sum of its proper divisors (1549468087).

56658994993 is a wasteful number, since it uses less digits than its factorization.

56658994993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477507.

The product of its digits is 566870400, while the sum is 73.

The spelling of 56658994993 in words is "fifty-six billion, six hundred fifty-eight million, nine hundred ninety-four thousand, nine hundred ninety-three".