16217056020 has 48 divisors (see below), whose sum is σ = 49535736768. Its totient is φ = 3931407360.

The previous prime is 16217056019. The next prime is 16217056033. The reversal of 16217056020 is 2065071261.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 12284989 + ... + 12286308.

It is an arithmetic number, because the mean of its divisors is an integer number (1031994516).

Almost surely, 2^16217056020 is an apocalyptic number.

16217056020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16217056020 is an abundant number, since it is smaller than the sum of its proper divisors (33318680748).

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

16217056020 is a wasteful number, since it uses less digits than its factorization.

16217056020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24571320 (or 24571318 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The spelling of 16217056020 in words is "sixteen billion, two hundred seventeen million, fifty-six thousand, twenty".