78834883848 has 128 divisors (see below), whose sum is σ = 229685068800. Its totient is φ = 22082086656.

The previous prime is 78834883843. The next prime is 78834883861. The reversal of 78834883848 is 84838843887.

It is a super-2 number, since 2×78834883848² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (78834883843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3686515 + ... + 3707837.

It is an arithmetic number, because the mean of its divisors is an integer number (1794414600).

Almost surely, 2^78834883848 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 78834883848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114842534400).

78834883848 is an abundant number, since it is smaller than the sum of its proper divisors (150850184952).

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

78834883848 is a wasteful number, since it uses less digits than its factorization.

78834883848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21771 (or 21767 counting only the distinct ones).

The product of its digits is 264241152, while the sum is 69.

The spelling of 78834883848 in words is "seventy-eight billion, eight hundred thirty-four million, eight hundred eighty-three thousand, eight hundred forty-eight".