6511512222161 has 8 divisors (see below), whose sum is σ = 6515109859104. Its totient is φ = 6507914822560.

The previous prime is 6511512222151. The next prime is 6511512222203. The reversal of 6511512222161 is 1612222151156.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6511512222161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6511512222151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101262326 + ... + 101326608.

It is an arithmetic number, because the mean of its divisors is an integer number (814388732388).

Almost surely, 2^{6511512222161} is an apocalyptic number.

It is an amenable number.

6511512222161 is a deficient number, since it is larger than the sum of its proper divisors (3597636943).

6511512222161 is a wasteful number, since it uses less digits than its factorization.

6511512222161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118671.

The product of its digits is 14400, while the sum is 35.

The spelling of 6511512222161 in words is "six trillion, five hundred eleven billion, five hundred twelve million, two hundred twenty-two thousand, one hundred sixty-one".