16421767066558 has 8 divisors (see below), whose sum is σ = 28151600685552. Its totient is φ = 7037900171376.

The previous prime is 16421767066517. The next prime is 16421767066559. The reversal of 16421767066558 is 85566076712461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16421767066558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421767066559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586491680935 + ... + 586491680962.

It is an arithmetic number, because the mean of its divisors is an integer number (3518950085694).

Almost surely, 2^{16421767066558} is an apocalyptic number.

16421767066558 is a deficient number, since it is larger than the sum of its proper divisors (11729833618994).

16421767066558 is a wasteful number, since it uses less digits than its factorization.

16421767066558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172983361906.

The product of its (nonzero) digits is 101606400, while the sum is 64.

The spelling of 16421767066558 in words is "sixteen trillion, four hundred twenty-one billion, seven hundred sixty-seven million, sixty-six thousand, five hundred fifty-eight".