79638703201 has 4 divisors (see below), whose sum is σ = 79649122500. Its totient is φ = 79628283904.

The previous prime is 79638703189. The next prime is 79638703231. The reversal of 79638703201 is 10230783697.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29809749025 + 49828954176 = 172655^2 + 223224^2 .

It is a cyclic number.

It is not a de Polignac number, because 79638703201 - 2⁵ = 79638703169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79638703231) 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, 5198176 + ... + 5213473.

It is an arithmetic number, because the mean of its divisors is an integer number (19912280625).

Almost surely, 2^79638703201 is an apocalyptic number.

It is an amenable number.

79638703201 is a deficient number, since it is larger than the sum of its proper divisors (10419299).

79638703201 is a wasteful number, since it uses less digits than its factorization.

79638703201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10419298.

The product of its (nonzero) digits is 381024, while the sum is 46.

The spelling of 79638703201 in words is "seventy-nine billion, six hundred thirty-eight million, seven hundred three thousand, two hundred one".