56555321660413 has 16 divisors (see below), whose sum is σ = 58617572590080. Its totient is φ = 54530069910400.

The previous prime is 56555321660351. The next prime is 56555321660429. The reversal of 56555321660413 is 31406612355565.

It is a cyclic number.

It is not a de Polignac number, because 56555321660413 - 2²⁹ = 56554784789501 is a prime.

It is a super-3 number, since 3×56555321660413³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56555321660483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2272678 + ... + 10875463.

It is an arithmetic number, because the mean of its divisors is an integer number (3663598286880).

Almost surely, 2^{56555321660413} is an apocalyptic number.

It is an amenable number.

56555321660413 is a deficient number, since it is larger than the sum of its proper divisors (2062250929667).

56555321660413 is a wasteful number, since it uses less digits than its factorization.

56555321660413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13149548.

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 56555321660413 in words is "fifty-six trillion, five hundred fifty-five billion, three hundred twenty-one million, six hundred sixty thousand, four hundred thirteen".