18167202078445 has 16 divisors (see below), whose sum is σ = 25445126803968. Its totient is φ = 12192456591360.

The previous prime is 18167202078437. The next prime is 18167202078461. The reversal of 18167202078445 is 54487020276181.

It is a happy number.

It is not a de Polignac number, because 18167202078445 - 2³ = 18167202078437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5521944276 + ... + 5521947565.

It is an arithmetic number, because the mean of its divisors is an integer number (1590320425248).

Almost surely, 2^{18167202078445} is an apocalyptic number.

It is an amenable number.

18167202078445 is a deficient number, since it is larger than the sum of its proper divisors (7277924725523).

18167202078445 is a wasteful number, since it uses less digits than its factorization.

18167202078445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11043891900.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 18167202078445 in words is "eighteen trillion, one hundred sixty-seven billion, two hundred two million, seventy-eight thousand, four hundred forty-five".