56877721320239 has 2 divisors, whose sum is σ = 56877721320240. Its totient is φ = 56877721320238.

The previous prime is 56877721320131. The next prime is 56877721320241. The reversal of 56877721320239 is 93202312777865.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56877721320239 - 2⁸ = 56877721319983 is a prime.

Together with 56877721320241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56877721320839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28438860660119 + 28438860660120.

It is an arithmetic number, because the mean of its divisors is an integer number (28438860660120).

Almost surely, 2^{56877721320239} is an apocalyptic number.

56877721320239 is a deficient number, since it is larger than the sum of its proper divisors (1).

56877721320239 is an equidigital number, since it uses as much as digits as its factorization.

56877721320239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53343360, while the sum is 62.

The spelling of 56877721320239 in words is "fifty-six trillion, eight hundred seventy-seven billion, seven hundred twenty-one million, three hundred twenty thousand, two hundred thirty-nine".