61592185609 has 2 divisors, whose sum is σ = 61592185610. Its totient is φ = 61592185608.

The previous prime is 61592185583. The next prime is 61592185657. The reversal of 61592185609 is 90658129516.

61592185609 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 can be written as a sum of positive squares in only one way, i.e., 38270314384 + 23321871225 = 195628^2 + 152715^2 .

It is a cyclic number.

It is not a de Polignac number, because 61592185609 - 2⁷ = 61592185481 is a prime.

It is not a weakly prime, because it can be changed into another prime (61592185009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30796092804 + 30796092805.

It is an arithmetic number, because the mean of its divisors is an integer number (30796092805).

Almost surely, 2^61592185609 is an apocalyptic number.

It is an amenable number.

61592185609 is a deficient number, since it is larger than the sum of its proper divisors (1).

61592185609 is an equidigital number, since it uses as much as digits as its factorization.

61592185609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The spelling of 61592185609 in words is "sixty-one billion, five hundred ninety-two million, one hundred eighty-five thousand, six hundred nine".