381069813877 has 2 divisors, whose sum is σ = 381069813878. Its totient is φ = 381069813876.

The previous prime is 381069813847. The next prime is 381069813889. The reversal of 381069813877 is 778318960183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325075583716 + 55994230161 = 570154^2 + 236631^2 .

It is an emirp because it is prime and its reverse (778318960183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381069813877 - 2²⁷ = 380935596149 is a prime.

It is a super-2 number, since 2×381069813877² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381069813847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190534906938 + 190534906939.

It is an arithmetic number, because the mean of its divisors is an integer number (190534906939).

Almost surely, 2^381069813877 is an apocalyptic number.

It is an amenable number.

381069813877 is a deficient number, since it is larger than the sum of its proper divisors (1).

381069813877 is an equidigital number, since it uses as much as digits as its factorization.

381069813877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 381069813877 in words is "three hundred eighty-one billion, sixty-nine million, eight hundred thirteen thousand, eight hundred seventy-seven".