79643648100241 has 3 divisors (see below), whose sum is σ = 79643657024571. Its totient is φ = 79643639175912.

The previous prime is 79643648100209. The next prime is 79643648100283. The reversal of 79643648100241 is 14200184634697.

It is a happy number.

The square root of 79643648100241 is 8924329.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 17071118421841 + 62572529678400 = 4131721^2 + 7910280^2 .

It is not a de Polignac number, because 79643648100241 - 2⁵ = 79643648100209 is a prime.

It is a super-2 number, since 2×79643648100241² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79643648100941) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4462165 + ... + 13386493.

It is an arithmetic number, because the mean of its divisors is an integer number (26547885674857).

Almost surely, 2^{79643648100241} is an apocalyptic number.

79643648100241 is the 8924329-th square number.

79643648100241 is the 4462165-th centered octagonal number.

It is an amenable number.

79643648100241 is a deficient number, since it is larger than the sum of its proper divisors (8924330).

79643648100241 is an frugal number, since it uses more digits than its factorization.

79643648100241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17848658 (or 8924329 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 79643648100241 in words is "seventy-nine trillion, six hundred forty-three billion, six hundred forty-eight million, one hundred thousand, two hundred forty-one".