79645343040 has 560 divisors, whose sum is σ = 305240253120. Its totient is φ = 19647774720.

The previous prime is 79645343017. The next prime is 79645343149. The reversal of 79645343040 is 4034354697.

79645343040 is a `hidden beast` number, since 79 + 6 + 4 + 534 + 3 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21174760 + ... + 21178520.

Almost surely, 2^79645343040 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 79645343040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152620126560).

79645343040 is an abundant number, since it is smaller than the sum of its proper divisors (225594910080).

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

79645343040 is a wasteful number, since it uses less digits than its factorization.

79645343040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852 (or 3833 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 79645343040 in words is "seventy-nine billion, six hundred forty-five million, three hundred forty-three thousand, forty".