56466991993 has 8 divisors (see below), whose sum is σ = 59544525600. Its totient is φ = 53400017088.

The previous prime is 56466991991. The next prime is 56466992009. The reversal of 56466991993 is 39919966465.

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 56466991993 - 2¹ = 56466991991 is a prime.

It is a super-2 number, since 2×56466991993² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56466991991) 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, 2628688 + ... + 2650081.

It is an arithmetic number, because the mean of its divisors is an integer number (7443065700).

Almost surely, 2^56466991993 is an apocalyptic number.

It is an amenable number.

56466991993 is a deficient number, since it is larger than the sum of its proper divisors (3077533607).

56466991993 is a wasteful number, since it uses less digits than its factorization.

56466991993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279351.

The product of its digits is 85030560, while the sum is 67.

The spelling of 56466991993 in words is "fifty-six billion, four hundred sixty-six million, nine hundred ninety-one thousand, nine hundred ninety-three".