79643520000 has 880 divisors, whose sum is σ = 322299331200. Its totient is φ = 19261440000.

The previous prime is 79643519999. The next prime is 79643520001. The reversal of 79643520000 is 2534697.

79643520000 is a `hidden beast` number, since 7 + 9 + 643 + 5 + 2 + 0 + 0 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (79643519999) and next prime (79643520001).

It is a tau number, because it is divible by the number of its divisors (880).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (79643520001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 190079791 + ... + 190080209.

It is an arithmetic number, because the mean of its divisors is an integer number (366249240).

Almost surely, 2^79643520000 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 79643520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161149665600).

79643520000 is an abundant number, since it is smaller than the sum of its proper divisors (242655811200).

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

79643520000 is a wasteful number, since it uses less digits than its factorization.

79643520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 79643520000 in words is "seventy-nine billion, six hundred forty-three million, five hundred twenty thousand".