555599774628 has 72 divisors (see below), whose sum is σ = 1488560830848. Its totient is φ = 174128302848.

The previous prime is 555599774627. The next prime is 555599774663. The reversal of 555599774628 is 826477995555.

555599774628 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 99 + 77 + 462 + 8 = 666.

It is a super-2 number, since 2×555599774628² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (555599774627) 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 23 ways as a sum of consecutive naturals, for example, 139825 + ... + 1063367.

It is an arithmetic number, because the mean of its divisors is an integer number (20674455984).

Almost surely, 2^555599774628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555599774628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744280415424).

555599774628 is an abundant number, since it is smaller than the sum of its proper divisors (932961056220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555599774628 is a wasteful number, since it uses less digits than its factorization.

555599774628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924553 (or 924548 counting only the distinct ones).

The product of its digits is 952560000, while the sum is 72.

The spelling of 555599774628 in words is "five hundred fifty-five billion, five hundred ninety-nine million, seven hundred seventy-four thousand, six hundred twenty-eight".