61056010061 has 4 divisors (see below), whose sum is σ = 61056532572. Its totient is φ = 61055487552.

The previous prime is 61056010031. The next prime is 61056010097. The reversal of 61056010061 is 16001065016.

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 38527801225 + 22528208836 = 196285^2 + 150094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61056010061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61056010061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61056010031) 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, 3365 + ... + 349461.

It is an arithmetic number, because the mean of its divisors is an integer number (15264133143).

Almost surely, 2^61056010061 is an apocalyptic number.

It is an amenable number.

61056010061 is a deficient number, since it is larger than the sum of its proper divisors (522511).

61056010061 is a wasteful number, since it uses less digits than its factorization.

61056010061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522510.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 61056010061 its reverse (16001065016), we get a palindrome (77057075077).

The spelling of 61056010061 in words is "sixty-one billion, fifty-six million, ten thousand, sixty-one".