64616144161646 has 16 divisors (see below), whose sum is σ = 120840581289600. Its totient is φ = 25175121101880.

The previous prime is 64616144161627. The next prime is 64616144161687.

64616144161646 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64616144161591 and 64616144161600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209792675696 + ... + 209792676003.

It is an arithmetic number, because the mean of its divisors is an integer number (7552536330600).

Almost surely, 2^{64616144161646} is an apocalyptic number.

64616144161646 is a deficient number, since it is larger than the sum of its proper divisors (56224437127954).

64616144161646 is a wasteful number, since it uses less digits than its factorization.

64616144161646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419585351719.

The product of its digits is 11943936, while the sum is 56.

The spelling of 64616144161646 in words is "sixty-four trillion, six hundred sixteen billion, one hundred forty-four million, one hundred sixty-one thousand, six hundred forty-six".