6511656616051 has 8 divisors (see below), whose sum is σ = 6623593502400. Its totient is φ = 6399772057320.

The previous prime is 6511656616033. The next prime is 6511656616067. The reversal of 6511656616051 is 1506166561156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6511656616051 - 2¹¹ = 6511656614003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6511656615986 and 6511656616004.

It is not an unprimeable number, because it can be changed into a prime (6511656616151) 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 7 ways as a sum of consecutive naturals, for example, 12830845 + ... + 13328686.

It is an arithmetic number, because the mean of its divisors is an integer number (827949187800).

Almost surely, 2^{6511656616051} is an apocalyptic number.

6511656616051 is a deficient number, since it is larger than the sum of its proper divisors (111936886349).

6511656616051 is a wasteful number, since it uses less digits than its factorization.

6511656616051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26163809.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 6511656616051 in words is "six trillion, five hundred eleven billion, six hundred fifty-six million, six hundred sixteen thousand, fifty-one".