56567876779 has 2 divisors, whose sum is σ = 56567876780. Its totient is φ = 56567876778.

The previous prime is 56567876759. The next prime is 56567876791. The reversal of 56567876779 is 97767876565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56567876779 - 2¹³ = 56567868587 is a prime.

It is not a weakly prime, because it can be changed into another prime (56567876759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28283938389 + 28283938390.

It is an arithmetic number, because the mean of its divisors is an integer number (28283938390).

Almost surely, 2^56567876779 is an apocalyptic number.

56567876779 is a deficient number, since it is larger than the sum of its proper divisors (1).

56567876779 is an equidigital number, since it uses as much as digits as its factorization.

56567876779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933508800, while the sum is 73.

It can be divided in two parts, 5656 and 7876779, that added together give a triangular number (7882435 = T₃₉₇₀).

The spelling of 56567876779 in words is "fifty-six billion, five hundred sixty-seven million, eight hundred seventy-six thousand, seven hundred seventy-nine".