78794939310 has 128 divisors (see below), whose sum is σ = 201553920000. Its totient is φ = 19645900800.

The previous prime is 78794939309. The next prime is 78794939329. The reversal of 78794939310 is 1393949787.

It is a happy number.

It is a super-2 number, since 2×78794939310² (a number of 23 digits) contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 68457235 + ... + 68458385.

It is an arithmetic number, because the mean of its divisors is an integer number (1574640000).

Almost surely, 2^78794939310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78794939310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100776960000).

78794939310 is an abundant number, since it is smaller than the sum of its proper divisors (122758980690).

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

78794939310 is a wasteful number, since it uses less digits than its factorization.

78794939310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946.

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 78794939310 in words is "seventy-eight billion, seven hundred ninety-four million, nine hundred thirty-nine thousand, three hundred ten".