16256321768420 has 24 divisors (see below), whose sum is σ = 34138382197248. Its totient is φ = 6502508424800.

The previous prime is 16256321768419. The next prime is 16256321768473. The reversal of 16256321768420 is 2486712365261.

16256321768420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×16256321768420³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6450815 + ... + 8609625.

It is an arithmetic number, because the mean of its divisors is an integer number (1422432591552).

Almost surely, 2^{16256321768420} is an apocalyptic number.

16256321768420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16256321768420 is an abundant number, since it is smaller than the sum of its proper divisors (17882060428828).

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

16256321768420 is a wasteful number, since it uses less digits than its factorization.

16256321768420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535331 (or 2535329 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 16256321768420 in words is "sixteen trillion, two hundred fifty-six billion, three hundred twenty-one million, seven hundred sixty-eight thousand, four hundred twenty".