1550125042099 has 2 divisors, whose sum is σ = 1550125042100. Its totient is φ = 1550125042098.

The previous prime is 1550125042087. The next prime is 1550125042139. The reversal of 1550125042099 is 9902405210551.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1550125042099 - 2¹⁵ = 1550125009331 is a prime.

It is a super-2 number, since 2×1550125042099² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1550125042009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775062521049 + 775062521050.

It is an arithmetic number, because the mean of its divisors is an integer number (775062521050).

Almost surely, 2^{1550125042099} is an apocalyptic number.

1550125042099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550125042099 is an equidigital number, since it uses as much as digits as its factorization.

1550125042099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 1550125042099 in words is "one trillion, five hundred fifty billion, one hundred twenty-five million, forty-two thousand, ninety-nine".