61020448529 has 2 divisors, whose sum is σ = 61020448530. Its totient is φ = 61020448528.

The previous prime is 61020448483. The next prime is 61020448579. The reversal of 61020448529 is 92584402016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32753760400 + 28266688129 = 180980^2 + 168127^2 .

It is a cyclic number.

It is not a de Polignac number, because 61020448529 - 2²⁰ = 61019399953 is a prime.

It is not a weakly prime, because it can be changed into another prime (61020448579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30510224264 + 30510224265.

It is an arithmetic number, because the mean of its divisors is an integer number (30510224265).

Almost surely, 2^61020448529 is an apocalyptic number.

It is an amenable number.

61020448529 is a deficient number, since it is larger than the sum of its proper divisors (1).

61020448529 is an equidigital number, since it uses as much as digits as its factorization.

61020448529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 61020448529 in words is "sixty-one billion, twenty million, four hundred forty-eight thousand, five hundred twenty-nine".