56321641169 has 2 divisors, whose sum is σ = 56321641170. Its totient is φ = 56321641168.

The previous prime is 56321641141. The next prime is 56321641217. The reversal of 56321641169 is 96114612365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31321920400 + 24999720769 = 176980^2 + 158113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56321641169 is a prime.

It is a super-2 number, since 2×56321641169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56321641469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28160820584 + 28160820585.

It is an arithmetic number, because the mean of its divisors is an integer number (28160820585).

Almost surely, 2^56321641169 is an apocalyptic number.

It is an amenable number.

56321641169 is a deficient number, since it is larger than the sum of its proper divisors (1).

56321641169 is an equidigital number, since it uses as much as digits as its factorization.

56321641169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The spelling of 56321641169 in words is "fifty-six billion, three hundred twenty-one million, six hundred forty-one thousand, one hundred sixty-nine".