1516551565011 has 12 divisors (see below), whose sum is σ = 2352202427592. Its totient is φ = 866600894208.

The previous prime is 1516551564991. The next prime is 1516551565043. The reversal of 1516551565011 is 1105651556151.

It is not a de Polignac number, because 1516551565011 - 2⁹ = 1516551564499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1516551569011) 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 in 11 ways as a sum of consecutive naturals, for example, 5158338510 + ... + 5158338803.

It is an arithmetic number, because the mean of its divisors is an integer number (196016868966).

Almost surely, 2^{1516551565011} is an apocalyptic number.

1516551565011 is a deficient number, since it is larger than the sum of its proper divisors (835650862581).

1516551565011 is a wasteful number, since it uses less digits than its factorization.

1516551565011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10316677330 (or 10316677323 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 42.

The spelling of 1516551565011 in words is "one trillion, five hundred sixteen billion, five hundred fifty-one million, five hundred sixty-five thousand, eleven".