551005445056 has 112 divisors (see below), whose sum is σ = 1227348389088. Its totient is φ = 243296768000.

The previous prime is 551005445033. The next prime is 551005445059. The reversal of 551005445056 is 650544500155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551005445059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3695406 + ... + 3841618.

Almost surely, 2^551005445056 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 551005445056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613674194544).

551005445056 is an abundant number, since it is smaller than the sum of its proper divisors (676342944032).

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

551005445056 is a wasteful number, since it uses less digits than its factorization.

551005445056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146390 (or 146380 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 551005445056 in words is "five hundred fifty-one billion, five million, four hundred forty-five thousand, fifty-six".