27752550061 has 2 divisors, whose sum is σ = 27752550062. Its totient is φ = 27752550060.

The previous prime is 27752549971. The next prime is 27752550071. The reversal of 27752550061 is 16005525772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19985476900 + 7767073161 = 141370^2 + 88131^2 .

It is a cyclic number.

It is not a de Polignac number, because 27752550061 - 2⁷ = 27752549933 is a prime.

It is a super-3 number, since 3×27752550061³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 27752549996 and 27752550023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27752550071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13876275030 + 13876275031.

It is an arithmetic number, because the mean of its divisors is an integer number (13876275031).

Almost surely, 2^27752550061 is an apocalyptic number.

It is an amenable number.

27752550061 is a deficient number, since it is larger than the sum of its proper divisors (1).

27752550061 is an equidigital number, since it uses as much as digits as its factorization.

27752550061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 27752550061 in words is "twenty-seven billion, seven hundred fifty-two million, five hundred fifty thousand, sixty-one".