19810268056992 has 96 divisors (see below), whose sum is σ = 59824385961984. Its totient is φ = 5622592608000.

The previous prime is 19810268056903. The next prime is 19810268057101. The reversal of 19810268056992 is 29965086201891.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97512984 + ... + 97715927.

It is an arithmetic number, because the mean of its divisors is an integer number (623170687104).

Almost surely, 2^{19810268056992} is an apocalyptic number.

19810268056992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19810268056992 is an abundant number, since it is smaller than the sum of its proper divisors (40014117904992).

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

19810268056992 is a wasteful number, since it uses less digits than its factorization.

19810268056992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195229082 (or 195229074 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 66.

The spelling of 19810268056992 in words is "nineteen trillion, eight hundred ten billion, two hundred sixty-eight million, fifty-six thousand, nine hundred ninety-two".