1551551234099 has 2 divisors, whose sum is σ = 1551551234100. Its totient is φ = 1551551234098.

The previous prime is 1551551234089. The next prime is 1551551234183. The reversal of 1551551234099 is 9904321551551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1551551234099 - 2⁴⁰ = 452039606323 is a prime.

It is a super-2 number, since 2×1551551234099² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1551551234089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775775617049 + 775775617050.

It is an arithmetic number, because the mean of its divisors is an integer number (775775617050).

Almost surely, 2^{1551551234099} is an apocalyptic number.

1551551234099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551551234099 is an equidigital number, since it uses as much as digits as its factorization.

1551551234099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215000, while the sum is 50.

The spelling of 1551551234099 in words is "one trillion, five hundred fifty-one billion, five hundred fifty-one million, two hundred thirty-four thousand, ninety-nine".