61150110161 has 4 divisors (see below), whose sum is σ = 69885840192. Its totient is φ = 52414380132.

The previous prime is 61150110149. The next prime is 61150110163. The reversal of 61150110161 is 16101105116.

It is a happy number.

61150110161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61150110161 - 2¹⁸ = 61149848017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61150110163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4367865005 + ... + 4367865018.

It is an arithmetic number, because the mean of its divisors is an integer number (17471460048).

Almost surely, 2^61150110161 is an apocalyptic number.

It is an amenable number.

61150110161 is a deficient number, since it is larger than the sum of its proper divisors (8735730031).

61150110161 is an equidigital number, since it uses as much as digits as its factorization.

61150110161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8735730030.

The product of its (nonzero) digits is 180, while the sum is 23.

Adding to 61150110161 its reverse (16101105116), we get a palindrome (77251215277).

The spelling of 61150110161 in words is "sixty-one billion, one hundred fifty million, one hundred ten thousand, one hundred sixty-one".