216183207223154 has 4 divisors (see below), whose sum is σ = 324274810834734. Its totient is φ = 108091603611576.

The previous prime is 216183207223147. The next prime is 216183207223177. The reversal of 216183207223154 is 451322702381612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 209182563291025 + 7000643932129 = 14463145^2 + 2645873^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216183207223099 and 216183207223108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54045801805787 + ... + 54045801805790.

Almost surely, 2^{216183207223154} is an apocalyptic number.

216183207223154 is a deficient number, since it is larger than the sum of its proper divisors (108091603611580).

216183207223154 is a wasteful number, since it uses less digits than its factorization.

216183207223154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108091603611579.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 216183207223154 in words is "two hundred sixteen trillion, one hundred eighty-three billion, two hundred seven million, two hundred twenty-three thousand, one hundred fifty-four".