61060555061 has 4 divisors (see below), whose sum is σ = 66611514624. Its totient is φ = 55509595500.

The previous prime is 61060555033. The next prime is 61060555099. The reversal of 61060555061 is 16055506016.

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 a de Polignac number, because none of the positive numbers 2^k-61060555061 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 (61060555021) 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, 2775479765 + ... + 2775479786.

It is an arithmetic number, because the mean of its divisors is an integer number (16652878656).

Almost surely, 2^61060555061 is an apocalyptic number.

It is an amenable number.

61060555061 is a deficient number, since it is larger than the sum of its proper divisors (5550959563).

61060555061 is a wasteful number, since it uses less digits than its factorization.

61060555061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550959562.

The product of its (nonzero) digits is 27000, while the sum is 35.

It can be divided in two parts, 6106055 and 5061, that added together give a palindrome (6111116).

The spelling of 61060555061 in words is "sixty-one billion, sixty million, five hundred fifty-five thousand, sixty-one".