79043464864 has 144 divisors (see below), whose sum is σ = 195148585800. Its totient is φ = 31237871616.

The previous prime is 79043464853. The next prime is 79043464879. The reversal of 79043464864 is 46846434097.

It can be written as a sum of positive squares in 4 ways, for example, as 19906952464 + 59136512400 = 141092^2 + 243180^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34835122 + ... + 34837390.

Almost surely, 2^79043464864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79043464864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97574292900).

79043464864 is an abundant number, since it is smaller than the sum of its proper divisors (116105120936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79043464864 is a wasteful number, since it uses less digits than its factorization.

79043464864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015 (or 4000 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 55.

The spelling of 79043464864 in words is "seventy-nine billion, forty-three million, four hundred sixty-four thousand, eight hundred sixty-four".