56305717641511 has 8 divisors (see below), whose sum is σ = 61490967912864. Its totient is φ = 51242473259040.

The previous prime is 56305717641491. The next prime is 56305717641553. The reversal of 56305717641511 is 11514671750365.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56305717641511 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 (56305717642511) 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, 30501471256 + ... + 30501473101.

It is an arithmetic number, because the mean of its divisors is an integer number (7686370989108).

Almost surely, 2^{56305717641511} is an apocalyptic number.

56305717641511 is a deficient number, since it is larger than the sum of its proper divisors (5185250271353).

56305717641511 is a wasteful number, since it uses less digits than its factorization.

56305717641511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61002944441.

The product of its (nonzero) digits is 2646000, while the sum is 52.

The spelling of 56305717641511 in words is "fifty-six trillion, three hundred five billion, seven hundred seventeen million, six hundred forty-one thousand, five hundred eleven".