555550900920 has 384 divisors, whose sum is σ = 1925572746240. Its totient is φ = 138428559360.

The previous prime is 555550900859. The next prime is 555550900997. The reversal of 555550900920 is 29009055555.

It is a happy number.

555550900920 is a `hidden beast` number, since 5 + 5 + 5 + 550 + 9 + 0 + 0 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 880429005 + ... + 880429635.

It is an arithmetic number, because the mean of its divisors is an integer number (5014512360).

Almost surely, 2^555550900920 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 555550900920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962786373120).

555550900920 is an abundant number, since it is smaller than the sum of its proper divisors (1370021845320).

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

555550900920 is a wasteful number, since it uses less digits than its factorization.

555550900920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 506250, while the sum is 45.

The spelling of 555550900920 in words is "five hundred fifty-five billion, five hundred fifty million, nine hundred thousand, nine hundred twenty".