79228673641 has 8 divisors (see below), whose sum is σ = 88265366280. Its totient is φ = 70612292352.

The previous prime is 79228673617. The next prime is 79228673651. The reversal of 79228673641 is 14637682297.

It can be written as a sum of positive squares in 4 ways, for example, as 5015472400 + 74213201241 = 70820^2 + 272421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79228673641 - 2⁵ = 79228673609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79228673651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105077440 + ... + 105078193.

It is an arithmetic number, because the mean of its divisors is an integer number (11033170785).

Almost surely, 2^79228673641 is an apocalyptic number.

It is an amenable number.

79228673641 is a deficient number, since it is larger than the sum of its proper divisors (9036692639).

79228673641 is a wasteful number, since it uses less digits than its factorization.

79228673641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210155675.

The product of its digits is 6096384, while the sum is 55.

The spelling of 79228673641 in words is "seventy-nine billion, two hundred twenty-eight million, six hundred seventy-three thousand, six hundred forty-one".