16555340460420 has 144 divisors (see below), whose sum is σ = 52323256440000. Its totient is φ = 4231858611456.

The previous prime is 16555340460419. The next prime is 16555340460457. The reversal of 16555340460420 is 2406404355561.

16555340460420 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 5 + 34 + 0 + 4 + 604 + 2 + 0 = 666.

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 47 ways as a sum of consecutive naturals, for example, 10682770 + ... + 12133929.

It is an arithmetic number, because the mean of its divisors is an integer number (363355947500).

Almost surely, 2^{16555340460420} is an apocalyptic number.

16555340460420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16555340460420 is an abundant number, since it is smaller than the sum of its proper divisors (35767915979580).

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

16555340460420 is a wasteful number, since it uses less digits than its factorization.

16555340460420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22816882 (or 22816877 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 16555340460420 in words is "sixteen trillion, five hundred fifty-five billion, three hundred forty million, four hundred sixty thousand, four hundred twenty".