1255516415299 has 2 divisors, whose sum is σ = 1255516415300. Its totient is φ = 1255516415298.

The previous prime is 1255516415291. The next prime is 1255516415347. The reversal of 1255516415299 is 9925146155521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1255516415299 - 2³ = 1255516415291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255516415291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627758207649 + 627758207650.

It is an arithmetic number, because the mean of its divisors is an integer number (627758207650).

Almost surely, 2^{1255516415299} is an apocalyptic number.

1255516415299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255516415299 is an equidigital number, since it uses as much as digits as its factorization.

1255516415299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860000, while the sum is 55.

The spelling of 1255516415299 in words is "one trillion, two hundred fifty-five billion, five hundred sixteen million, four hundred fifteen thousand, two hundred ninety-nine".