19980170616 has 48 divisors (see below), whose sum is σ = 58105601640. Its totient is φ = 5708619840.

The previous prime is 19980170531. The next prime is 19980170621. The reversal of 19980170616 is 61607108991.

It is a congruent number.

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, 8493795 + ... + 8496146.

Almost surely, 2^19980170616 is an apocalyptic number.

It is an amenable number.

19980170616 is an abundant number, since it is smaller than the sum of its proper divisors (38125431024).

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

19980170616 is a wasteful number, since it uses less digits than its factorization.

19980170616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16989964 (or 16989953 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 48.

The spelling of 19980170616 in words is "nineteen billion, nine hundred eighty million, one hundred seventy thousand, six hundred sixteen".