61564046527 has 2 divisors, whose sum is σ = 61564046528. Its totient is φ = 61564046526.

The previous prime is 61564046497. The next prime is 61564046623. The reversal of 61564046527 is 72564046516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61564046527 - 2⁷ = 61564046399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61564026527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30782023263 + 30782023264.

It is an arithmetic number, because the mean of its divisors is an integer number (30782023264).

Almost surely, 2^61564046527 is an apocalyptic number.

61564046527 is a deficient number, since it is larger than the sum of its proper divisors (1).

61564046527 is an equidigital number, since it uses as much as digits as its factorization.

61564046527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 61564046527 in words is "sixty-one billion, five hundred sixty-four million, forty-six thousand, five hundred twenty-seven".