386555423257 has 2 divisors, whose sum is σ = 386555423258. Its totient is φ = 386555423256.

The previous prime is 386555423239. The next prime is 386555423311. The reversal of 386555423257 is 752324555683.

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., 302487900121 + 84067523136 = 549989^2 + 289944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386555423257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 386555423198 and 386555423207.

It is not a weakly prime, because it can be changed into another prime (386555423057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193277711628 + 193277711629.

It is an arithmetic number, because the mean of its divisors is an integer number (193277711629).

Almost surely, 2^386555423257 is an apocalyptic number.

It is an amenable number.

386555423257 is a deficient number, since it is larger than the sum of its proper divisors (1).

386555423257 is an equidigital number, since it uses as much as digits as its factorization.

386555423257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240000, while the sum is 55.

The spelling of 386555423257 in words is "three hundred eighty-six billion, five hundred fifty-five million, four hundred twenty-three thousand, two hundred fifty-seven".