387278764097 has 2 divisors, whose sum is σ = 387278764098. Its totient is φ = 387278764096.

The previous prime is 387278764079. The next prime is 387278764099. The reversal of 387278764097 is 790467872783.

Together with previous prime (387278764079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201393615361 + 185885148736 = 448769^2 + 431144^2 .

It is an emirp because it is prime and its reverse (790467872783) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387278764097 is a prime.

It is a super-2 number, since 2×387278764097² (a number of 24 digits) contains 22 as substring.

Together with 387278764099, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (387278764099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193639382048 + 193639382049.

It is an arithmetic number, because the mean of its divisors is an integer number (193639382049).

Almost surely, 2^387278764097 is an apocalyptic number.

It is an amenable number.

387278764097 is a deficient number, since it is larger than the sum of its proper divisors (1).

387278764097 is an equidigital number, since it uses as much as digits as its factorization.

387278764097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 199148544, while the sum is 68.

The spelling of 387278764097 in words is "three hundred eighty-seven billion, two hundred seventy-eight million, seven hundred sixty-four thousand, ninety-seven".