1396677218805 has 24 divisors (see below), whose sum is σ = 2640989651040. Its totient is φ = 677176833120.

The previous prime is 1396677218777. The next prime is 1396677218809. The reversal of 1396677218805 is 5088127766931.

1396677218805 is a `hidden beast` number, since 1 + 396 + 67 + 7 + 2 + 188 + 0 + 5 = 666.

It is not a de Polignac number, because 1396677218805 - 2⁸ = 1396677218549 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396677218809) 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 in 23 ways as a sum of consecutive naturals, for example, 1410784575 + ... + 1410785564.

It is an arithmetic number, because the mean of its divisors is an integer number (110041235460).

Almost surely, 2^{1396677218805} is an apocalyptic number.

1396677218805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1396677218805 is a deficient number, since it is larger than the sum of its proper divisors (1244312432235).

1396677218805 is a wasteful number, since it uses less digits than its factorization.

1396677218805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821570161 (or 2821570158 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 1396677218805 in words is "one trillion, three hundred ninety-six billion, six hundred seventy-seven million, two hundred eighteen thousand, eight hundred five".