1320377374669 has 2 divisors, whose sum is σ = 1320377374670. Its totient is φ = 1320377374668.

The previous prime is 1320377374637. The next prime is 1320377374697. The reversal of 1320377374669 is 9664737730231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970550077225 + 349827297444 = 985165^2 + 591462^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320377374669 - 2⁵ = 1320377374637 is a prime.

It is a super-2 number, since 2×1320377374669² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320377374699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660188687334 + 660188687335.

It is an arithmetic number, because the mean of its divisors is an integer number (660188687335).

Almost surely, 2^{1320377374669} is an apocalyptic number.

It is an amenable number.

1320377374669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320377374669 is an equidigital number, since it uses as much as digits as its factorization.

1320377374669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24004512, while the sum is 58.

The spelling of 1320377374669 in words is "one trillion, three hundred twenty billion, three hundred seventy-seven million, three hundred seventy-four thousand, six hundred sixty-nine".