166862220518 has 32 divisors (see below), whose sum is σ = 292664506368. Its totient is φ = 69874164000.

The previous prime is 166862220443. The next prime is 166862220523. The reversal of 166862220518 is 815022268661.

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, 518030 + ... + 775937.

It is an arithmetic number, because the mean of its divisors is an integer number (9145765824).

Almost surely, 2^166862220518 is an apocalyptic number.

166862220518 is a deficient number, since it is larger than the sum of its proper divisors (125802285850).

166862220518 is a wasteful number, since it uses less digits than its factorization.

166862220518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294188.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 166862220518 in words is "one hundred sixty-six billion, eight hundred sixty-two million, two hundred twenty thousand, five hundred eighteen".