61563773027 has 2 divisors, whose sum is σ = 61563773028. Its totient is φ = 61563773026.

The previous prime is 61563772997. The next prime is 61563773059. The reversal of 61563773027 is 72037736516.

61563773027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61563773027 - 2⁸ = 61563772771 is a prime.

It is not a weakly prime, because it can be changed into another prime (61563773627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30781886513 + 30781886514.

It is an arithmetic number, because the mean of its divisors is an integer number (30781886514).

Almost surely, 2^61563773027 is an apocalyptic number.

61563773027 is a deficient number, since it is larger than the sum of its proper divisors (1).

61563773027 is an equidigital number, since it uses as much as digits as its factorization.

61563773027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1111320, while the sum is 47.

The spelling of 61563773027 in words is "sixty-one billion, five hundred sixty-three million, seven hundred seventy-three thousand, twenty-seven".