2005515500491 has 2 divisors, whose sum is σ = 2005515500492. Its totient is φ = 2005515500490.

The previous prime is 2005515500447. The next prime is 2005515500497. The reversal of 2005515500491 is 1940055155002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2005515500491 - 2¹⁵ = 2005515467723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2005515500491.

It is not a weakly prime, because it can be changed into another prime (2005515500497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002757750245 + 1002757750246.

It is an arithmetic number, because the mean of its divisors is an integer number (1002757750246).

Almost surely, 2^{2005515500491} is an apocalyptic number.

2005515500491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005515500491 is an equidigital number, since it uses as much as digits as its factorization.

2005515500491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 2005515500491 in words is "two trillion, five billion, five hundred fifteen million, five hundred thousand, four hundred ninety-one".