1551503648297 has 2 divisors, whose sum is σ = 1551503648298. Its totient is φ = 1551503648296.

The previous prime is 1551503648293. The next prime is 1551503648309. The reversal of 1551503648297 is 7928463051551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1549081433641 + 2422214656 = 1244621^2 + 49216^2 .

It is a cyclic number.

It is not a de Polignac number, because 1551503648297 - 2² = 1551503648293 is a prime.

It is not a weakly prime, because it can be changed into another prime (1551503648291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775751824148 + 775751824149.

It is an arithmetic number, because the mean of its divisors is an integer number (775751824149).

It is a 1-persistent number, because it is pandigital, but 2⋅1551503648297 = 3103007296594 is not.

Almost surely, 2^{1551503648297} is an apocalyptic number.

It is an amenable number.

1551503648297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551503648297 is an equidigital number, since it uses as much as digits as its factorization.

1551503648297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 1551503648297 in words is "one trillion, five hundred fifty-one billion, five hundred three million, six hundred forty-eight thousand, two hundred ninety-seven".