60556115661 has 4 divisors (see below), whose sum is σ = 80741487552. Its totient is φ = 40370743772.

The previous prime is 60556115647. The next prime is 60556115681. The reversal of 60556115661 is 16651165506.

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 not a de Polignac number, because 60556115661 - 2⁷ = 60556115533 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 (60556115681) 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, 10092685941 + ... + 10092685946.

It is an arithmetic number, because the mean of its divisors is an integer number (20185371888).

Almost surely, 2^60556115661 is an apocalyptic number.

It is an amenable number.

60556115661 is a deficient number, since it is larger than the sum of its proper divisors (20185371891).

60556115661 is a wasteful number, since it uses less digits than its factorization.

60556115661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20185371890.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 60556115661 in words is "sixty billion, five hundred fifty-six million, one hundred fifteen thousand, six hundred sixty-one".