79857078573349 has 32 divisors (see below), whose sum is σ = 105546137066496. Its totient is φ = 58495106584320.

The previous prime is 79857078573347. The next prime is 79857078573361. The reversal of 79857078573349 is 94337587075897.

It is not a de Polignac number, because 79857078573349 - 2¹ = 79857078573347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79857078573347) 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 31 ways as a sum of consecutive naturals, for example, 35801479 + ... + 37966564.

It is an arithmetic number, because the mean of its divisors is an integer number (3298316783328).

Almost surely, 2^{79857078573349} is an apocalyptic number.

It is an amenable number.

79857078573349 is a deficient number, since it is larger than the sum of its proper divisors (25689058493147).

79857078573349 is a wasteful number, since it uses less digits than its factorization.

79857078573349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73768905.

The product of its (nonzero) digits is 11202105600, while the sum is 82.

The spelling of 79857078573349 in words is "seventy-nine trillion, eight hundred fifty-seven billion, seventy-eight million, five hundred seventy-three thousand, three hundred forty-nine".