61061506016161 has 8 divisors (see below), whose sum is σ = 69789532245120. Its totient is φ = 52334718272448.

The previous prime is 61061506016129. The next prime is 61061506016171. The reversal of 61061506016161 is 16161060516016.

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 61061506016161 - 2⁵ = 61061506016129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61061506016171) 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, 309515656 + ... + 309712873.

It is an arithmetic number, because the mean of its divisors is an integer number (8723691530640).

Almost surely, 2^{61061506016161} is an apocalyptic number.

It is an amenable number.

61061506016161 is a deficient number, since it is larger than the sum of its proper divisors (8728026228959).

61061506016161 is a wasteful number, since it uses less digits than its factorization.

61061506016161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619242623.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 61061506016161 in words is "sixty-one trillion, sixty-one billion, five hundred six million, sixteen thousand, one hundred sixty-one".