78403312704 has 112 divisors (see below), whose sum is σ = 208924956800. Its totient is φ = 25948200960.

The previous prime is 78403312697. The next prime is 78403312769. The reversal of 78403312704 is 40721330487.

It is a super-2 number, since 2×78403312704² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20668632 + ... + 20672424.

It is an arithmetic number, because the mean of its divisors is an integer number (1865401400).

Almost surely, 2^78403312704 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 78403312704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104462478400).

78403312704 is an abundant number, since it is smaller than the sum of its proper divisors (130521644096).

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

78403312704 is a wasteful number, since it uses less digits than its factorization.

78403312704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548 (or 4538 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 78403312704 in words is "seventy-eight billion, four hundred three million, three hundred twelve thousand, seven hundred four".