551130255664 has 60 divisors (see below), whose sum is σ = 1121461629600. Its totient is φ = 262303747200.

The previous prime is 551130255653. The next prime is 551130255673. The reversal of 551130255664 is 466552031155.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 551130255664.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644137 + ... + 1231735.

It is an arithmetic number, because the mean of its divisors is an integer number (18691027160).

Almost surely, 2^551130255664 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 551130255664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560730814800).

551130255664 is an abundant number, since it is smaller than the sum of its proper divisors (570331373936).

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

551130255664 is a wasteful number, since it uses less digits than its factorization.

551130255664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587730 (or 587693 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 551130255664 in words is "five hundred fifty-one billion, one hundred thirty million, two hundred fifty-five thousand, six hundred sixty-four".