53027780277781 has 2 divisors, whose sum is σ = 53027780277782. Its totient is φ = 53027780277780.

The previous prime is 53027780277779. The next prime is 53027780277839. The reversal of 53027780277781 is 18777208772035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49397478815556 + 3630301462225 = 7028334^2 + 1905335^2 .

It is a cyclic number.

It is not a de Polignac number, because 53027780277781 - 2¹ = 53027780277779 is a prime.

It is a super-3 number, since 3×53027780277781³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 53027780277779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53027780272781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26513890138890 + 26513890138891.

It is an arithmetic number, because the mean of its divisors is an integer number (26513890138891).

Almost surely, 2^{53027780277781} is an apocalyptic number.

It is an amenable number.

53027780277781 is a deficient number, since it is larger than the sum of its proper divisors (1).

53027780277781 is an equidigital number, since it uses as much as digits as its factorization.

53027780277781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64538880, while the sum is 64.

The spelling of 53027780277781 in words is "fifty-three trillion, twenty-seven billion, seven hundred eighty million, two hundred seventy-seven thousand, seven hundred eighty-one".