79443836640000 has 4320 divisors, whose sum is σ = 366560932953600. Its totient is φ = 16572211200000.

The previous prime is 79443836639989. The next prime is 79443836640001. The reversal of 79443836640000 is 4663834497.

It is a tau number, because it is divible by the number of its divisors (4320).

It is a super-2 number, since 2×79443836640000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79443836640001) by changing a digit.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 786572639950 + ... + 786572640050.

Almost surely, 2^{79443836640000} is an apocalyptic number.

79443836640000 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79443836640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183280466476800).

79443836640000 is an abundant number, since it is smaller than the sum of its proper divisors (287117096313600).

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

79443836640000 is a wasteful number, since it uses less digits than its factorization.

79443836640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 54.

The spelling of 79443836640000 in words is "seventy-nine trillion, four hundred forty-three billion, eight hundred thirty-six million, six hundred forty thousand".