1551553103291 has 2 divisors, whose sum is σ = 1551553103292. Its totient is φ = 1551553103290.

The previous prime is 1551553103267. The next prime is 1551553103299. The reversal of 1551553103291 is 1923013551551.

It is a strong prime.

It is an emirp because it is prime and its reverse (1923013551551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1551553103291 - 2¹⁸ = 1551552841147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1551553103299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775776551645 + 775776551646.

It is an arithmetic number, because the mean of its divisors is an integer number (775776551646).

Almost surely, 2^{1551553103291} is an apocalyptic number.

1551553103291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551553103291 is an equidigital number, since it uses as much as digits as its factorization.

1551553103291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 101250, while the sum is 41.

The spelling of 1551553103291 in words is "one trillion, five hundred fifty-one billion, five hundred fifty-three million, one hundred three thousand, two hundred ninety-one".