61051011061 has 4 divisors (see below), whose sum is σ = 61061955724. Its totient is φ = 61040066400.

The previous prime is 61051011059. The next prime is 61051011083. The reversal of 61051011061 is 16011015016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26153034961 + 34897976100 = 161719^2 + 186810^2 .

It is a cyclic number.

It is not a de Polignac number, because 61051011061 - 2¹ = 61051011059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61051011361) 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, 5463960 + ... + 5475121.

It is an arithmetic number, because the mean of its divisors is an integer number (15265488931).

Almost surely, 2^61051011061 is an apocalyptic number.

It is an amenable number.

61051011061 is a deficient number, since it is larger than the sum of its proper divisors (10944663).

61051011061 is a wasteful number, since it uses less digits than its factorization.

61051011061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10944662.

The product of its (nonzero) digits is 180, while the sum is 22.

Adding to 61051011061 its reverse (16011015016), we get a palindrome (77062026077).

The spelling of 61051011061 in words is "sixty-one billion, fifty-one million, eleven thousand, sixty-one".