61074118121 has 4 divisors (see below), whose sum is σ = 61074755412. Its totient is φ = 61073480832.

The previous prime is 61074118099. The next prime is 61074118151. The reversal of 61074118121 is 12181147016.

61074118121 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 brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6074487721 + 54999630400 = 77939^2 + 234520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61074118121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61074118151) 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, 142400 + ... + 377393.

It is an arithmetic number, because the mean of its divisors is an integer number (15268688853).

Almost surely, 2^61074118121 is an apocalyptic number.

It is an amenable number.

61074118121 is a deficient number, since it is larger than the sum of its proper divisors (637291).

61074118121 is a wasteful number, since it uses less digits than its factorization.

61074118121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637290.

The product of its (nonzero) digits is 2688, while the sum is 32.

The spelling of 61074118121 in words is "sixty-one billion, seventy-four million, one hundred eighteen thousand, one hundred twenty-one".