555610005561 has 24 divisors (see below), whose sum is σ = 829843980480. Its totient is φ = 330123708096.

The previous prime is 555610005541. The next prime is 555610005571. The reversal of 555610005561 is 165500016555.

555610005561 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 555610005561 - 2¹¹ = 555610003513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (555610005541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18879741 + ... + 18909146.

It is an arithmetic number, because the mean of its divisors is an integer number (34576832520).

Almost surely, 2^555610005561 is an apocalyptic number.

It is an amenable number.

555610005561 is a deficient number, since it is larger than the sum of its proper divisors (274233974919).

555610005561 is a wasteful number, since it uses less digits than its factorization.

555610005561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37788945 (or 37788932 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 555610005561 in words is "five hundred fifty-five billion, six hundred ten million, five thousand, five hundred sixty-one".