19980000020016 has 60 divisors (see below), whose sum is σ = 55916629448680. Its totient is φ = 6659954818560.

The previous prime is 19980000019949. The next prime is 19980000020023. The reversal of 19980000020016 is 61002000008991.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25962531 + ... + 26721021.

Almost surely, 2^{19980000020016} is an apocalyptic number.

19980000020016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19980000020016 is an abundant number, since it is smaller than the sum of its proper divisors (35936629428664).

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

19980000020016 is a wasteful number, since it uses less digits than its factorization.

19980000020016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941434 (or 941425 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 19980000020016 in words is "nineteen trillion, nine hundred eighty billion, twenty thousand, sixteen".