216223225464 has 32 divisors (see below), whose sum is σ = 540570240000. Its totient is φ = 72072784992.

The previous prime is 216223225433. The next prime is 216223225481. The reversal of 216223225464 is 464522322612.

It is a congruent number.

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, 1505707 + ... + 1643045.

It is an arithmetic number, because the mean of its divisors is an integer number (16892820000).

Almost surely, 2^216223225464 is an apocalyptic number.

216223225464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

216223225464 is an abundant number, since it is smaller than the sum of its proper divisors (324347014536).

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

216223225464 is a wasteful number, since it uses less digits than its factorization.

216223225464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202947 (or 202943 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The spelling of 216223225464 in words is "two hundred sixteen billion, two hundred twenty-three million, two hundred twenty-five thousand, four hundred sixty-four".