61056161066 has 4 divisors (see below), whose sum is σ = 91584241602. Its totient is φ = 30528080532.

The previous prime is 61056161041. The next prime is 61056161069. The reversal of 61056161066 is 66016165016.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54012084025 + 7044077041 = 232405^2 + 83929^2 .

It is not an unprimeable number, because it can be changed into a prime (61056161069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15264040265 + ... + 15264040268.

Almost surely, 2^61056161066 is an apocalyptic number.

61056161066 is a deficient number, since it is larger than the sum of its proper divisors (30528080536).

61056161066 is a wasteful number, since it uses less digits than its factorization.

61056161066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30528080535.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 61056161066 in words is "sixty-one billion, fifty-six million, one hundred sixty-one thousand, sixty-six".