405667775616 has 32 divisors (see below), whose sum is σ = 1077555030000. Its totient is φ = 135222591744.

The previous prime is 405667775599. The next prime is 405667775647. The reversal of 405667775616 is 616577766504.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 405667775616.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528212866 + ... + 528213633.

Almost surely, 2^405667775616 is an apocalyptic number.

It is an amenable number.

405667775616 is an abundant number, since it is smaller than the sum of its proper divisors (671887254384).

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

405667775616 is a wasteful number, since it uses less digits than its factorization.

405667775616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056426516 (or 1056426504 counting only the distinct ones).

The product of its (nonzero) digits is 44452800, while the sum is 60.

The spelling of 405667775616 in words is "four hundred five billion, six hundred sixty-seven million, seven hundred seventy-five thousand, six hundred sixteen".