61111151600161 has 16 divisors (see below), whose sum is σ = 66194230818240. Its totient is φ = 56083594438080.

The previous prime is 61111151600141. The next prime is 61111151600189. The reversal of 61111151600161 is 16100615111116.

It is a cyclic number.

It is not a de Polignac number, because 61111151600161 - 2²⁷ = 61111017382433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61111151600141) 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, 17549475 + ... + 20741416.

It is an arithmetic number, because the mean of its divisors is an integer number (4137139426140).

Almost surely, 2^{61111151600161} is an apocalyptic number.

It is an amenable number.

61111151600161 is a deficient number, since it is larger than the sum of its proper divisors (5083079218079).

61111151600161 is a wasteful number, since it uses less digits than its factorization.

61111151600161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38291616.

The product of its (nonzero) digits is 1080, while the sum is 31.

Adding to 61111151600161 its reverse (16100615111116), we get a palindrome (77211766711277).

The spelling of 61111151600161 in words is "sixty-one trillion, one hundred eleven billion, one hundred fifty-one million, six hundred thousand, one hundred sixty-one".