61245320061 has 16 divisors (see below), whose sum is σ = 82062482688. Its totient is φ = 40629556800.

The previous prime is 61245320057. The next prime is 61245320089. The reversal of 61245320061 is 16002354216.

61245320061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61245320061 - 2² = 61245320057 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61245820061) 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, 621595 + ... + 713351.

It is an arithmetic number, because the mean of its divisors is an integer number (5128905168).

Almost surely, 2^61245320061 is an apocalyptic number.

It is an amenable number.

61245320061 is a deficient number, since it is larger than the sum of its proper divisors (20817162627).

61245320061 is a wasteful number, since it uses less digits than its factorization.

61245320061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92852.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 61245320061 its reverse (16002354216), we get a palindrome (77247674277).

The spelling of 61245320061 in words is "sixty-one billion, two hundred forty-five million, three hundred twenty thousand, sixty-one".