56865167767553 has 2 divisors, whose sum is σ = 56865167767554. Its totient is φ = 56865167767552.

The previous prime is 56865167767489. The next prime is 56865167767571. The reversal of 56865167767553 is 35576776156865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51567220585024 + 5297947182529 = 7181032^2 + 2301727^2 .

It is a cyclic number.

It is not a de Polignac number, because 56865167767553 - 2⁶ = 56865167767489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56865167767853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28432583883776 + 28432583883777.

It is an arithmetic number, because the mean of its divisors is an integer number (28432583883777).

Almost surely, 2^{56865167767553} is an apocalyptic number.

It is an amenable number.

56865167767553 is a deficient number, since it is larger than the sum of its proper divisors (1).

56865167767553 is an equidigital number, since it uses as much as digits as its factorization.

56865167767553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6667920000, while the sum is 77.

The spelling of 56865167767553 in words is "fifty-six trillion, eight hundred sixty-five billion, one hundred sixty-seven million, seven hundred sixty-seven thousand, five hundred fifty-three".