60645955561 has 2 divisors, whose sum is σ = 60645955562. Its totient is φ = 60645955560.

The previous prime is 60645955547. The next prime is 60645955613. The reversal of 60645955561 is 16555954606.

It is an a-pointer prime, because the next prime (60645955613) can be obtained adding 60645955561 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51742145961 + 8903809600 = 227469^2 + 94360^2 .

It is a cyclic number.

It is not a de Polignac number, because 60645955561 - 2²¹ = 60643858409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 60645955499 and 60645955508.

It is not a weakly prime, because it can be changed into another prime (60645955501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30322977780 + 30322977781.

It is an arithmetic number, because the mean of its divisors is an integer number (30322977781).

Almost surely, 2^60645955561 is an apocalyptic number.

It is an amenable number.

60645955561 is a deficient number, since it is larger than the sum of its proper divisors (1).

60645955561 is an equidigital number, since it uses as much as digits as its factorization.

60645955561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 60645955561 in words is "sixty billion, six hundred forty-five million, nine hundred fifty-five thousand, five hundred sixty-one".