79670640000 has 640 divisors, whose sum is σ = 308961100800. Its totient is φ = 17805312000.

The previous prime is 79670639989. The next prime is 79670640031. The reversal of 79670640000 is 4607697.

It is a tau number, because it is divible by the number of its divisors (640).

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, 78959496 + ... + 78960504.

It is an arithmetic number, because the mean of its divisors is an integer number (482751720).

Almost surely, 2^79670640000 is an apocalyptic number.

79670640000 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 79670640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154480550400).

79670640000 is an abundant number, since it is smaller than the sum of its proper divisors (229290460800).

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

79670640000 is a wasteful number, since it uses less digits than its factorization.

79670640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 79670640000 in words is "seventy-nine billion, six hundred seventy million, six hundred forty thousand".