555687385331 has 4 divisors (see below), whose sum is σ = 598432568832. Its totient is φ = 512942201832.

The previous prime is 555687385283. The next prime is 555687385339. The reversal of 555687385331 is 133583786555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 555687385331 - 2³⁴ = 538507516147 is a prime.

It is a super-2 number, since 2×555687385331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555687385339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21372591731 + ... + 21372591756.

It is an arithmetic number, because the mean of its divisors is an integer number (149608142208).

Almost surely, 2^555687385331 is an apocalyptic number.

555687385331 is a deficient number, since it is larger than the sum of its proper divisors (42745183501).

555687385331 is a wasteful number, since it uses less digits than its factorization.

555687385331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42745183500.

The product of its digits is 45360000, while the sum is 59.

The spelling of 555687385331 in words is "five hundred fifty-five billion, six hundred eighty-seven million, three hundred eighty-five thousand, three hundred thirty-one".