16421767066534 has 128 divisors (see below), whose sum is σ = 26740636738560. Its totient is φ = 7545814848000.

The previous prime is 16421767066517. The next prime is 16421767066559. The reversal of 16421767066534 is 43566076712461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7014850204 + ... + 7014852544.

It is an arithmetic number, because the mean of its divisors is an integer number (208911224520).

Almost surely, 2^{16421767066534} is an apocalyptic number.

16421767066534 is a deficient number, since it is larger than the sum of its proper divisors (10318869672026).

16421767066534 is a wasteful number, since it uses less digits than its factorization.

16421767066534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846.

The product of its (nonzero) digits is 30481920, while the sum is 58.

The spelling of 16421767066534 in words is "sixteen trillion, four hundred twenty-one billion, seven hundred sixty-seven million, sixty-six thousand, five hundred thirty-four".