1628216513280 has 216 divisors, whose sum is σ = 6438239781792. Its totient is φ = 372163756032.

The previous prime is 1628216513267. The next prime is 1628216513299. The reversal of 1628216513280 is 823156128261.

1628216513280 is a `hidden beast` number, since 1 + 6 + 282 + 165 + 132 + 80 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10014949 + ... + 10176228.

Almost surely, 2^{1628216513280} is an apocalyptic number.

1628216513280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1628216513280 is an abundant number, since it is smaller than the sum of its proper divisors (4810023268512).

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

1628216513280 is a wasteful number, since it uses less digits than its factorization.

1628216513280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20191211 (or 20191194 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 1628216513280 in words is "one trillion, six hundred twenty-eight billion, two hundred sixteen million, five hundred thirteen thousand, two hundred eighty".