428186615314387 has 2 divisors, whose sum is σ = 428186615314388. Its totient is φ = 428186615314386.

The previous prime is 428186615314321. The next prime is 428186615314391. The reversal of 428186615314387 is 783413516681824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428186615314387 - 2⁷ = 428186615314259 is a prime.

It is not a weakly prime, because it can be changed into another prime (428186615314487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214093307657193 + 214093307657194.

It is an arithmetic number, because the mean of its divisors is an integer number (214093307657194).

Almost surely, 2^{428186615314387} is an apocalyptic number.

428186615314387 is a deficient number, since it is larger than the sum of its proper divisors (1).

428186615314387 is an equidigital number, since it uses as much as digits as its factorization.

428186615314387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185794560, while the sum is 67.

The spelling of 428186615314387 in words is "four hundred twenty-eight trillion, one hundred eighty-six billion, six hundred fifteen million, three hundred fourteen thousand, three hundred eighty-seven".