1550184121990 has 16 divisors (see below), whose sum is σ = 3188950193952. Its totient is φ = 531491698944.

The previous prime is 1550184121961. The next prime is 1550184122029. The reversal of 1550184121990 is 991214810551.

It is a self number, because there is not a number n which added to its sum of digits gives 1550184121990.

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 7 ways as a sum of consecutive naturals, for example, 11072743659 + ... + 11072743798.

It is an arithmetic number, because the mean of its divisors is an integer number (199309387122).

Almost surely, 2^{1550184121990} is an apocalyptic number.

1550184121990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1550184121990 is an abundant number, since it is smaller than the sum of its proper divisors (1638766071962).

1550184121990 is a wasteful number, since it uses less digits than its factorization.

1550184121990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22145487471.

The product of its (nonzero) digits is 129600, while the sum is 46.

The spelling of 1550184121990 in words is "one trillion, five hundred fifty billion, one hundred eighty-four million, one hundred twenty-one thousand, nine hundred ninety".