212167334545 has 32 divisors (see below), whose sum is σ = 265741660800. Its totient is φ = 162462744576.

The previous prime is 212167334389. The next prime is 212167334581. The reversal of 212167334545 is 545433761212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212167334545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9520626 + ... + 9542884.

It is an arithmetic number, because the mean of its divisors is an integer number (8304426900).

Almost surely, 2^212167334545 is an apocalyptic number.

It is an amenable number.

212167334545 is a deficient number, since it is larger than the sum of its proper divisors (53574326255).

212167334545 is a wasteful number, since it uses less digits than its factorization.

212167334545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23137.

The product of its digits is 604800, while the sum is 43.

The spelling of 212167334545 in words is "two hundred twelve billion, one hundred sixty-seven million, three hundred thirty-four thousand, five hundred forty-five".