79789263840 has 1152 divisors, whose sum is σ = 337300733952. Its totient is φ = 17557585920.

The previous prime is 79789263823. The next prime is 79789263893. The reversal of 79789263840 is 4836298797.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 628261857 + ... + 628261983.

It is an arithmetic number, because the mean of its divisors is an integer number (292795776).

Almost surely, 2^79789263840 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 79789263840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168650366976).

79789263840 is an abundant number, since it is smaller than the sum of its proper divisors (257511470112).

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

79789263840 is a wasteful number, since it uses less digits than its factorization.

79789263840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 79789263840 in words is "seventy-nine billion, seven hundred eighty-nine million, two hundred sixty-three thousand, eight hundred forty".