79645049205 has 48 divisors (see below), whose sum is σ = 137353999104. Its totient is φ = 39385376640.

The previous prime is 79645049191. The next prime is 79645049213. The reversal of 79645049205 is 50294054697.

It is not a de Polignac number, because 79645049205 - 2¹³ = 79645041013 is a prime.

It is a super-2 number, since 2×79645049205² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98035 + ... + 410975.

It is an arithmetic number, because the mean of its divisors is an integer number (2861541648).

Almost surely, 2^79645049205 is an apocalyptic number.

It is an amenable number.

79645049205 is a deficient number, since it is larger than the sum of its proper divisors (57708949899).

79645049205 is a wasteful number, since it uses less digits than its factorization.

79645049205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313034 (or 313015 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 79645049205 in words is "seventy-nine billion, six hundred forty-five million, forty-nine thousand, two hundred five".