216354562456 has 48 divisors (see below), whose sum is σ = 431126583840. Its totient is φ = 101767733760.

The previous prime is 216354562441. The next prime is 216354562493. The reversal of 216354562456 is 654265453612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5373841 + ... + 5413951.

It is an arithmetic number, because the mean of its divisors is an integer number (8981803830).

Almost surely, 2^216354562456 is an apocalyptic number.

It is an amenable number.

216354562456 is a deficient number, since it is larger than the sum of its proper divisors (214772021384).

216354562456 is a wasteful number, since it uses less digits than its factorization.

216354562456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42484 (or 42463 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 49.

The spelling of 216354562456 in words is "two hundred sixteen billion, three hundred fifty-four million, five hundred sixty-two thousand, four hundred fifty-six".