79389826560 has 240 divisors, whose sum is σ = 299945646000. Its totient is φ = 19245957120.

The previous prime is 79389826517. The next prime is 79389826601. The reversal of 79389826560 is 6562898397.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×79389826560² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 96816 + ... + 410064.

It is an arithmetic number, because the mean of its divisors is an integer number (1249773525).

Almost surely, 2^79389826560 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 79389826560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149972823000).

79389826560 is an abundant number, since it is smaller than the sum of its proper divisors (220555819440).

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

79389826560 is a wasteful number, since it uses less digits than its factorization.

79389826560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313289 (or 313270 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 79389826560 in words is "seventy-nine billion, three hundred eighty-nine million, eight hundred twenty-six thousand, five hundred sixty".