945220044761 has 2 divisors, whose sum is σ = 945220044762. Its totient is φ = 945220044760.

The previous prime is 945220044757. The next prime is 945220044779. The reversal of 945220044761 is 167440022549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 660351264400 + 284868780361 = 812620^2 + 533731^2 .

It is a cyclic number.

It is not a de Polignac number, because 945220044761 - 2² = 945220044757 is a prime.

It is not a weakly prime, because it can be changed into another prime (945220044701) 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 as a sum of consecutive naturals, namely, 472610022380 + 472610022381.

It is an arithmetic number, because the mean of its divisors is an integer number (472610022381).

Almost surely, 2^945220044761 is an apocalyptic number.

It is an amenable number.

945220044761 is a deficient number, since it is larger than the sum of its proper divisors (1).

945220044761 is an equidigital number, since it uses as much as digits as its factorization.

945220044761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 945220044761 in words is "nine hundred forty-five billion, two hundred twenty million, forty-four thousand, seven hundred sixty-one".