3120561145477 has 2 divisors, whose sum is σ = 3120561145478. Its totient is φ = 3120561145476.

The previous prime is 3120561145463. The next prime is 3120561145517. The reversal of 3120561145477 is 7745411650213.

3120561145477 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., 1780340478436 + 1340220667041 = 1334294^2 + 1157679^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120561145477 - 2¹¹ = 3120561143429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3120561145417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560280572738 + 1560280572739.

It is an arithmetic number, because the mean of its divisors is an integer number (1560280572739).

Almost surely, 2^{3120561145477} is an apocalyptic number.

It is an amenable number.

3120561145477 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120561145477 is an equidigital number, since it uses as much as digits as its factorization.

3120561145477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 3120561145477 in words is "three trillion, one hundred twenty billion, five hundred sixty-one million, one hundred forty-five thousand, four hundred seventy-seven".