19550945260312 has 8 divisors (see below), whose sum is σ = 36658022363100. Its totient is φ = 9775472630152.

The previous prime is 19550945260291. The next prime is 19550945260403. The reversal of 19550945260312 is 21306254905591.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 19550945260312.

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 as a sum of consecutive naturals, namely, 1221934078762 + ... + 1221934078777.

Almost surely, 2^{19550945260312} is an apocalyptic number.

It is an amenable number.

19550945260312 is a deficient number, since it is larger than the sum of its proper divisors (17107077102788).

19550945260312 is a wasteful number, since it uses less digits than its factorization.

19550945260312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443868157545 (or 2443868157541 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 52.

The spelling of 19550945260312 in words is "nineteen trillion, five hundred fifty billion, nine hundred forty-five million, two hundred sixty thousand, three hundred twelve".