216457191922 has 8 divisors (see below), whose sum is σ = 335159523072. Its totient is φ = 104737350900.

The previous prime is 216457191901. The next prime is 216457191941. The reversal of 216457191922 is 229191754612.

216457191922 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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, 1745622454 + ... + 1745622577.

It is an arithmetic number, because the mean of its divisors is an integer number (41894940384).

Almost surely, 2^216457191922 is an apocalyptic number.

216457191922 is a deficient number, since it is larger than the sum of its proper divisors (118702331150).

216457191922 is a wasteful number, since it uses less digits than its factorization.

216457191922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491245064.

The product of its digits is 544320, while the sum is 49.

The spelling of 216457191922 in words is "two hundred sixteen billion, four hundred fifty-seven million, one hundred ninety-one thousand, nine hundred twenty-two".