19949817182976 has 90 divisors (see below), whose sum is σ = 59486745154452. Its totient is φ = 6649939054080.

The previous prime is 19949817182951. The next prime is 19949817182987. The reversal of 19949817182976 is 67928171894991.

19949817182976 is a `hidden beast` number, since 1 + 99 + 498 + 1 + 7 + 18 + 29 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 19949817182895 and 19949817182904.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 481022310 + ... + 481063781.

Almost surely, 2^{19949817182976} is an apocalyptic number.

19949817182976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19949817182976 is an abundant number, since it is smaller than the sum of its proper divisors (39536927971476).

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

19949817182976 is an frugal number, since it uses more digits than its factorization.

19949817182976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962086119 (or 962086096 counting only the distinct ones).

The product of its digits is 987614208, while the sum is 81.

The spelling of 19949817182976 in words is "nineteen trillion, nine hundred forty-nine billion, eight hundred seventeen million, one hundred eighty-two thousand, nine hundred seventy-six".