1553214847897 has 2 divisors, whose sum is σ = 1553214847898. Its totient is φ = 1553214847896.

The previous prime is 1553214847883. The next prime is 1553214847927. The reversal of 1553214847897 is 7987484123551.

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., 1107806770576 + 445408077321 = 1052524^2 + 667389^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553214847897 - 2¹¹ = 1553214845849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1553214847817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776607423948 + 776607423949.

It is an arithmetic number, because the mean of its divisors is an integer number (776607423949).

Almost surely, 2^{1553214847897} is an apocalyptic number.

It is an amenable number.

1553214847897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553214847897 is an equidigital number, since it uses as much as digits as its factorization.

1553214847897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67737600, while the sum is 64.

The spelling of 1553214847897 in words is "one trillion, five hundred fifty-three billion, two hundred fourteen million, eight hundred forty-seven thousand, eight hundred ninety-seven".