79438580566 has 16 divisors (see below), whose sum is σ = 119864631744. Its totient is φ = 39484396224.

The previous prime is 79438580561. The next prime is 79438580597. The reversal of 79438580566 is 66508583497.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79438580561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56856 + ... + 402628.

It is an arithmetic number, because the mean of its divisors is an integer number (7491539484).

Almost surely, 2^79438580566 is an apocalyptic number.

79438580566 is a deficient number, since it is larger than the sum of its proper divisors (40426051178).

79438580566 is a wasteful number, since it uses less digits than its factorization.

79438580566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346455.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 79438580566 in words is "seventy-nine billion, four hundred thirty-eight million, five hundred eighty thousand, five hundred sixty-six".