19550982012 has 12 divisors (see below), whose sum is σ = 45618958056. Its totient is φ = 6516994000.

The previous prime is 19550981987. The next prime is 19550982019. The reversal of 19550982012 is 21028905591.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19550982019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 814624239 + ... + 814624262.

It is an arithmetic number, because the mean of its divisors is an integer number (3801579838).

Almost surely, 2^19550982012 is an apocalyptic number.

19550982012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19550982012 is an abundant number, since it is smaller than the sum of its proper divisors (26067976044).

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

19550982012 is a wasteful number, since it uses less digits than its factorization.

19550982012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629248508 (or 1629248506 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 42.

The spelling of 19550982012 in words is "nineteen billion, five hundred fifty million, nine hundred eighty-two thousand, twelve".