220166247386 has 4 divisors (see below), whose sum is σ = 330249371082. Its totient is φ = 110083123692.

The previous prime is 220166247307. The next prime is 220166247391. The reversal of 220166247386 is 683742661022.

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., 219309573025 + 856674361 = 468305^2 + 29269^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220166247386.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55041561845 + ... + 55041561848.

Almost surely, 2^220166247386 is an apocalyptic number.

220166247386 is a deficient number, since it is larger than the sum of its proper divisors (110083123696).

220166247386 is a wasteful number, since it uses less digits than its factorization.

220166247386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110083123695.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 220166247386 in words is "two hundred twenty billion, one hundred sixty-six million, two hundred forty-seven thousand, three hundred eighty-six".