1022168645777 has 2 divisors, whose sum is σ = 1022168645778. Its totient is φ = 1022168645776.

The previous prime is 1022168645753. The next prime is 1022168645881. The reversal of 1022168645777 is 7775468612201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772484545921 + 249684099856 = 878911^2 + 499684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022168645777 - 2⁸ = 1022168645521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022168645177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511084322888 + 511084322889.

It is an arithmetic number, because the mean of its divisors is an integer number (511084322889).

Almost surely, 2^{1022168645777} is an apocalyptic number.

It is an amenable number.

1022168645777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022168645777 is an equidigital number, since it uses as much as digits as its factorization.

1022168645777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 1022168645777 in words is "one trillion, twenty-two billion, one hundred sixty-eight million, six hundred forty-five thousand, seven hundred seventy-seven".