1691381600147 has 2 divisors, whose sum is σ = 1691381600148. Its totient is φ = 1691381600146.

The previous prime is 1691381600141. The next prime is 1691381600203. The reversal of 1691381600147 is 7410061831961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1691381600147 - 2⁸ = 1691381599891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1691381600141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845690800073 + 845690800074.

It is an arithmetic number, because the mean of its divisors is an integer number (845690800074).

Almost surely, 2^{1691381600147} is an apocalyptic number.

1691381600147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1691381600147 is an equidigital number, since it uses as much as digits as its factorization.

1691381600147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 1691381600147 in words is "one trillion, six hundred ninety-one billion, three hundred eighty-one million, six hundred thousand, one hundred forty-seven".