78305332830 has 64 divisors (see below), whose sum is σ = 191598136128. Its totient is φ = 20474654720.

The previous prime is 78305332789. The next prime is 78305332873. The reversal of 78305332830 is 3823350387.

It is a super-2 number, since 2×78305332830² (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 31 ways as a sum of consecutive naturals, for example, 2683720 + ... + 2712740.

It is an arithmetic number, because the mean of its divisors is an integer number (2993720877).

Almost surely, 2^78305332830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78305332830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95799068064).

78305332830 is an abundant number, since it is smaller than the sum of its proper divisors (113292803298).

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

78305332830 is a wasteful number, since it uses less digits than its factorization.

78305332830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30781.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 78305332830 in words is "seventy-eight billion, three hundred five million, three hundred thirty-two thousand, eight hundred thirty".