19012057286778 has 96 divisors (see below), whose sum is σ = 41824539207360. Its totient is φ = 6240671585280.

The previous prime is 19012057286759. The next prime is 19012057286791. The reversal of 19012057286778 is 87768275021091.

It is a super-2 number, since 2×19012057286778² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1592160288 + ... + 1592172228.

It is an arithmetic number, because the mean of its divisors is an integer number (435672283410).

Almost surely, 2^{19012057286778} is an apocalyptic number.

19012057286778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19012057286778 is an abundant number, since it is smaller than the sum of its proper divisors (22812481920582).

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

19012057286778 is a wasteful number, since it uses less digits than its factorization.

19012057286778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15404 (or 15401 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 63.

The spelling of 19012057286778 in words is "nineteen trillion, twelve billion, fifty-seven million, two hundred eighty-six thousand, seven hundred seventy-eight".