1380206228677 has 2 divisors, whose sum is σ = 1380206228678. Its totient is φ = 1380206228676.

The previous prime is 1380206228671. The next prime is 1380206228689. The reversal of 1380206228677 is 7768226020831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1347157170241 + 33049058436 = 1160671^2 + 181794^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380206228677 - 2¹¹ = 1380206226629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380206228671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690103114338 + 690103114339.

It is an arithmetic number, because the mean of its divisors is an integer number (690103114339).

Almost surely, 2^{1380206228677} is an apocalyptic number.

It is an amenable number.

1380206228677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380206228677 is an equidigital number, since it uses as much as digits as its factorization.

1380206228677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 1380206228677 in words is "one trillion, three hundred eighty billion, two hundred six million, two hundred twenty-eight thousand, six hundred seventy-seven".