19764809423232 has 64 divisors (see below), whose sum is σ = 52764095712000. Its totient is φ = 6555162898944.

The previous prime is 19764809423231. The next prime is 19764809423237. The reversal of 19764809423232 is 23232490846791.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19764809423231) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 129247348 + ... + 129400179.

It is an arithmetic number, because the mean of its divisors is an integer number (824438995500).

Almost surely, 2^{19764809423232} is an apocalyptic number.

19764809423232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19764809423232 is an abundant number, since it is smaller than the sum of its proper divisors (32999286288768).

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

19764809423232 is a wasteful number, since it uses less digits than its factorization.

19764809423232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258647743 (or 258647731 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 60.

The spelling of 19764809423232 in words is "nineteen trillion, seven hundred sixty-four billion, eight hundred nine million, four hundred twenty-three thousand, two hundred thirty-two".