550475523990 has 64 divisors (see below), whose sum is σ = 1677639697920. Its totient is φ = 125822976480.

The previous prime is 550475523971. The next prime is 550475524033. The reversal of 550475523990 is 99325574055.

550475523990 is a `hidden beast` number, since 5 + 5 + 0 + 475 + 52 + 39 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145626556 + ... + 145630335.

It is an arithmetic number, because the mean of its divisors is an integer number (26213120280).

Almost surely, 2^550475523990 is an apocalyptic number.

550475523990 is an abundant number, since it is smaller than the sum of its proper divisors (1127164173930).

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

550475523990 is a wasteful number, since it uses less digits than its factorization.

550475523990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291256914 (or 291256908 counting only the distinct ones).

The product of its (nonzero) digits is 8505000, while the sum is 54.

The spelling of 550475523990 in words is "five hundred fifty billion, four hundred seventy-five million, five hundred twenty-three thousand, nine hundred ninety".