555660000000001 has 4 divisors (see below), whose sum is σ = 598403076923092. Its totient is φ = 512916923076912.

The previous prime is 555659999999987. The next prime is 555660000000097. The reversal of 555660000000001 is 100000000066555.

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 349099292271601 + 206560707728400 = 18684199^2 + 14372220^2 .

It is a cyclic number.

It is not a de Polignac number, because 555660000000001 - 2¹³ = 555659999991809 is a prime.

It is a super-2 number, since 2×555660000000001² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555660000003001) 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, 21371538461526 + ... + 21371538461551.

It is an arithmetic number, because the mean of its divisors is an integer number (149600769230773).

Almost surely, 2^{555660000000001} is an apocalyptic number.

It is an amenable number.

555660000000001 is a deficient number, since it is larger than the sum of its proper divisors (42743076923091).

555660000000001 is a wasteful number, since it uses less digits than its factorization.

555660000000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42743076923090.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 555660000000001 its reverse (100000000066555), we get a palindrome (655660000066556).

The spelling of 555660000000001 in words is "five hundred fifty-five trillion, six hundred sixty billion, one", and thus it is an aban number.