387278763673 has 2 divisors, whose sum is σ = 387278763674. Its totient is φ = 387278763672.

The previous prime is 387278763659. The next prime is 387278763701. The reversal of 387278763673 is 376367872783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246902653449 + 140376110224 = 496893^2 + 374668^2 .

It is a cyclic number.

It is not a de Polignac number, because 387278763673 - 2¹³ = 387278755481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 387278763599 and 387278763608.

It is not a weakly prime, because it can be changed into another prime (387278761673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193639381836 + 193639381837.

It is an arithmetic number, because the mean of its divisors is an integer number (193639381837).

Almost surely, 2^387278763673 is an apocalyptic number.

It is an amenable number.

387278763673 is a deficient number, since it is larger than the sum of its proper divisors (1).

387278763673 is an equidigital number, since it uses as much as digits as its factorization.

387278763673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 298722816, while the sum is 67.

The spelling of 387278763673 in words is "three hundred eighty-seven billion, two hundred seventy-eight million, seven hundred sixty-three thousand, six hundred seventy-three".