1863623640077 has 2 divisors, whose sum is σ = 1863623640078. Its totient is φ = 1863623640076.

The previous prime is 1863623640049. The next prime is 1863623640107. The reversal of 1863623640077 is 7700463263681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1029928641316 + 833694998761 = 1014854^2 + 913069^2 .

It is a cyclic number.

It is not a de Polignac number, because 1863623640077 - 2¹⁸ = 1863623377933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1863623640037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931811820038 + 931811820039.

It is an arithmetic number, because the mean of its divisors is an integer number (931811820039).

Almost surely, 2^{1863623640077} is an apocalyptic number.

It is an amenable number.

1863623640077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863623640077 is an equidigital number, since it uses as much as digits as its factorization.

1863623640077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 1863623640077 in words is "one trillion, eight hundred sixty-three billion, six hundred twenty-three million, six hundred forty thousand, seventy-seven".