19550412256490 has 16 divisors (see below), whose sum is σ = 35190847471752. Its totient is φ = 7820141478144.

The previous prime is 19550412256447. The next prime is 19550412256513. The reversal of 19550412256490 is 9465221405591.

It can be written as a sum of positive squares in 4 ways, for example, as 17490989221729 + 2059423034761 = 4182223^2 + 1435069^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803822 + ... + 6304518.

Almost surely, 2^{19550412256490} is an apocalyptic number.

19550412256490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19550412256490 is a deficient number, since it is larger than the sum of its proper divisors (15640435215262).

19550412256490 is a wasteful number, since it uses less digits than its factorization.

19550412256490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5856121.

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 19550412256490 in words is "nineteen trillion, five hundred fifty billion, four hundred twelve million, two hundred fifty-six thousand, four hundred ninety".