220163625642497 has 4 divisors (see below), whose sum is σ = 220163718611760. Its totient is φ = 220163532673236.

The previous prime is 220163625642461. The next prime is 220163625642509. The reversal of 220163625642497 is 794246526361022.

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.

It is a cyclic number.

It is not a de Polignac number, because 220163625642497 - 2⁸ = 220163625642241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220163625692497) 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, 42837023 + ... + 47700500.

It is an arithmetic number, because the mean of its divisors is an integer number (55040929652940).

Almost surely, 2^{220163625642497} is an apocalyptic number.

It is an amenable number.

220163625642497 is a deficient number, since it is larger than the sum of its proper divisors (92969263).

220163625642497 is an equidigital number, since it uses as much as digits as its factorization.

220163625642497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92969262.

The product of its (nonzero) digits is 52254720, while the sum is 59.

The spelling of 220163625642497 in words is "two hundred twenty trillion, one hundred sixty-three billion, six hundred twenty-five million, six hundred forty-two thousand, four hundred ninety-seven".