2755253650781 has 2 divisors, whose sum is σ = 2755253650782. Its totient is φ = 2755253650780.

The previous prime is 2755253650759. The next prime is 2755253650783. The reversal of 2755253650781 is 1870563525572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2051569228900 + 703684421881 = 1432330^2 + 838859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2755253650781 is a prime.

It is a super-2 number, since 2×2755253650781² (a number of 26 digits) contains 22 as substring.

Together with 2755253650783, 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 (2755253650783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1377626825390 + 1377626825391.

It is an arithmetic number, because the mean of its divisors is an integer number (1377626825391).

Almost surely, 2^{2755253650781} is an apocalyptic number.

It is an amenable number.

2755253650781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2755253650781 is an equidigital number, since it uses as much as digits as its factorization.

2755253650781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640000, while the sum is 56.

The spelling of 2755253650781 in words is "two trillion, seven hundred fifty-five billion, two hundred fifty-three million, six hundred fifty thousand, seven hundred eighty-one".