5011511066501 has 4 divisors (see below), whose sum is σ = 5029603164492. Its totient is φ = 4993418968512.

The previous prime is 5011511066473. The next prime is 5011511066537. The reversal of 5011511066501 is 1056601151105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3036288825025 + 1975222241476 = 1742495^2 + 1405426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5011511066501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5011511066101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9046048580 + ... + 9046049133.

It is an arithmetic number, because the mean of its divisors is an integer number (1257400791123).

Almost surely, 2^{5011511066501} is an apocalyptic number.

It is an amenable number.

5011511066501 is a deficient number, since it is larger than the sum of its proper divisors (18092097991).

5011511066501 is a wasteful number, since it uses less digits than its factorization.

5011511066501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18092097990.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 5011511066501 in words is "five trillion, eleven billion, five hundred eleven million, sixty-six thousand, five hundred one".