1387438812211 has 2 divisors, whose sum is σ = 1387438812212. Its totient is φ = 1387438812210.

The previous prime is 1387438812167. The next prime is 1387438812349. The reversal of 1387438812211 is 1122188347831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1387438812211 - 2¹³ = 1387438804019 is a prime.

It is not a weakly prime, because it can be changed into another prime (1387438812511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693719406105 + 693719406106.

It is an arithmetic number, because the mean of its divisors is an integer number (693719406106).

Almost surely, 2^{1387438812211} is an apocalyptic number.

1387438812211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387438812211 is an equidigital number, since it uses as much as digits as its factorization.

1387438812211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516096, while the sum is 49.

The spelling of 1387438812211 in words is "one trillion, three hundred eighty-seven billion, four hundred thirty-eight million, eight hundred twelve thousand, two hundred eleven".