1551317596447 has 2 divisors, whose sum is σ = 1551317596448. Its totient is φ = 1551317596446.

The previous prime is 1551317596349. The next prime is 1551317596481. The reversal of 1551317596447 is 7446957131551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1551317596447 - 2⁷ = 1551317596319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1551317596391 and 1551317596400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1551317596247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775658798223 + 775658798224.

It is an arithmetic number, because the mean of its divisors is an integer number (775658798224).

Almost surely, 2^{1551317596447} is an apocalyptic number.

1551317596447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551317596447 is an equidigital number, since it uses as much as digits as its factorization.

1551317596447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876000, while the sum is 58.

The spelling of 1551317596447 in words is "one trillion, five hundred fifty-one billion, three hundred seventeen million, five hundred ninety-six thousand, four hundred forty-seven".