61144673161 has 8 divisors (see below), whose sum is σ = 71834301504. Its totient is φ = 51310215120.

The previous prime is 61144673159. The next prime is 61144673197. The reversal of 61144673161 is 16137644116.

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 61144673161 - 2¹ = 61144673159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61144674161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213792421 + ... + 213792706.

It is an arithmetic number, because the mean of its divisors is an integer number (8979287688).

Almost surely, 2^61144673161 is an apocalyptic number.

It is an amenable number.

61144673161 is a deficient number, since it is larger than the sum of its proper divisors (10689628343).

61144673161 is a wasteful number, since it uses less digits than its factorization.

61144673161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427585151.

The product of its digits is 72576, while the sum is 40.

The spelling of 61144673161 in words is "sixty-one billion, one hundred forty-four million, six hundred seventy-three thousand, one hundred sixty-one".