79648692841 has 3 divisors (see below), whose sum is σ = 79648975063. Its totient is φ = 79648410620.

The previous prime is 79648692817. The next prime is 79648692853. The reversal of 79648692841 is 14829684697.

The square root of 79648692841 is 282221.

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., 248724441 + 79399968400 = 15771^2 + 281780^2 .

It is not a de Polignac number, because 79648692841 - 2¹⁹ = 79648168553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79648690841) 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 2 ways as a sum of consecutive naturals, for example, 141111 + ... + 423331.

Almost surely, 2^79648692841 is an apocalyptic number.

79648692841 is the 282221-st square number.

79648692841 is the 141111-st centered octagonal number.

It is an amenable number.

79648692841 is a deficient number, since it is larger than the sum of its proper divisors (282222).

79648692841 is an frugal number, since it uses more digits than its factorization.

79648692841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564442 (or 282221 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 64.

Multiplying 79648692841 by its sum of digits (64), we get a square (5097516341824 = 2257768²).

The spelling of 79648692841 in words is "seventy-nine billion, six hundred forty-eight million, six hundred ninety-two thousand, eight hundred forty-one".