61066496161 has 16 divisors (see below), whose sum is σ = 71693054208. Its totient is φ = 51392851200.

The previous prime is 61066496143. The next prime is 61066496207. The reversal of 61066496161 is 16169466016.

It is a happy number.

61066496161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61066496161 - 2⁹ = 61066495649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61066496131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2665305 + ... + 2688118.

It is an arithmetic number, because the mean of its divisors is an integer number (4480815888).

Almost surely, 2^61066496161 is an apocalyptic number.

61066496161 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

61066496161 is a deficient number, since it is larger than the sum of its proper divisors (10626558047).

61066496161 is a wasteful number, since it uses less digits than its factorization.

61066496161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353512.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 61066496161 in words is "sixty-one billion, sixty-six million, four hundred ninety-six thousand, one hundred sixty-one".