79621062577873 has 4 divisors (see below), whose sum is σ = 79627005792180. Its totient is φ = 79615119363568.

The previous prime is 79621062577783. The next prime is 79621062577897. The reversal of 79621062577873 is 37877526012697.

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 5202627979329 + 74418434598544 = 2280927^2 + 8626612^2 .

It is a cyclic number.

It is not a de Polignac number, because 79621062577873 - 2³⁷ = 79483623624401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79621062572873) 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, 2971587058 + ... + 2971613851.

It is an arithmetic number, because the mean of its divisors is an integer number (19906751448045).

Almost surely, 2^{79621062577873} is an apocalyptic number.

It is an amenable number.

79621062577873 is a deficient number, since it is larger than the sum of its proper divisors (5943214307).

79621062577873 is a wasteful number, since it uses less digits than its factorization.

79621062577873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5943214306.

The product of its (nonzero) digits is 373403520, while the sum is 70.

The spelling of 79621062577873 in words is "seventy-nine trillion, six hundred twenty-one billion, sixty-two million, five hundred seventy-seven thousand, eight hundred seventy-three".