220166701697 has 4 divisors (see below), whose sum is σ = 220167780096. Its totient is φ = 220165623300.

The previous prime is 220166701691. The next prime is 220166701721. The reversal of 220166701697 is 796107661022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 220166701697 - 2³⁶ = 151447224961 is a prime.

It is a super-2 number, since 2×220166701697² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220166701691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128873 + ... + 675974.

It is an arithmetic number, because the mean of its divisors is an integer number (55041945024).

Almost surely, 2^220166701697 is an apocalyptic number.

It is an amenable number.

220166701697 is a deficient number, since it is larger than the sum of its proper divisors (1078399).

220166701697 is an equidigital number, since it uses as much as digits as its factorization.

220166701697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078398.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 220166701697 in words is "two hundred twenty billion, one hundred sixty-six million, seven hundred one thousand, six hundred ninety-seven".