555561672928 has 48 divisors (see below), whose sum is σ = 1130328017280. Its totient is φ = 268514611200.

The previous prime is 555561672871. The next prime is 555561672929. The reversal of 555561672928 is 829276165555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555561672929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556108 + ... + 1191796.

It is an arithmetic number, because the mean of its divisors is an integer number (23548500360).

Almost surely, 2^555561672928 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 555561672928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565164008640).

555561672928 is an abundant number, since it is smaller than the sum of its proper divisors (574766344352).

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

555561672928 is a wasteful number, since it uses less digits than its factorization.

555561672928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636611 (or 636603 counting only the distinct ones).

The product of its digits is 45360000, while the sum is 61.

The spelling of 555561672928 in words is "five hundred fifty-five billion, five hundred sixty-one million, six hundred seventy-two thousand, nine hundred twenty-eight".