19926948770928 has 160 divisors (see below), whose sum is σ = 58531789440000. Its totient is φ = 6487959043584.

The previous prime is 19926948770909. The next prime is 19926948770969. The reversal of 19926948770928 is 82907784962991.

19926948770928 is a `hidden beast` number, since 1 + 9 + 9 + 2 + 69 + 487 + 70 + 9 + 2 + 8 = 666.

19926948770928 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9148300 + ... + 11115092.

It is an arithmetic number, because the mean of its divisors is an integer number (365823684000).

Almost surely, 2^{19926948770928} is an apocalyptic number.

19926948770928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19926948770928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29265894720000).

19926948770928 is an abundant number, since it is smaller than the sum of its proper divisors (38604840669072).

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

19926948770928 is a wasteful number, since it uses less digits than its factorization.

19926948770928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967356 (or 1967344 counting only the distinct ones).

The product of its (nonzero) digits is 1975228416, while the sum is 81.

The spelling of 19926948770928 in words is "nineteen trillion, nine hundred twenty-six billion, nine hundred forty-eight million, seven hundred seventy thousand, nine hundred twenty-eight".