60645563617 has 4 divisors (see below), whose sum is σ = 60715837440. Its totient is φ = 60575289796.

The previous prime is 60645563609. The next prime is 60645563623. The reversal of 60645563617 is 71636554606.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71636554606 = 2 ⋅35818277303.

It is a cyclic number.

It is not a de Polignac number, because 60645563617 - 2³ = 60645563609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60645563647) 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 in 3 ways as a sum of consecutive naturals, for example, 35135617 + ... + 35137342.

It is an arithmetic number, because the mean of its divisors is an integer number (15178959360).

Almost surely, 2^60645563617 is an apocalyptic number.

It is an amenable number.

60645563617 is a deficient number, since it is larger than the sum of its proper divisors (70273823).

60645563617 is an equidigital number, since it uses as much as digits as its factorization.

60645563617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70273822.

The product of its (nonzero) digits is 2721600, while the sum is 49.

The spelling of 60645563617 in words is "sixty billion, six hundred forty-five million, five hundred sixty-three thousand, six hundred seventeen".