78394603704 has 128 divisors (see below), whose sum is σ = 205810606080. Its totient is φ = 24852643200.

The previous prime is 78394603697. The next prime is 78394603739. The reversal of 78394603704 is 40730649387.

It is a happy number.

It is a super-2 number, since 2×78394603704² (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, 24473767 + ... + 24476969.

It is an arithmetic number, because the mean of its divisors is an integer number (1607895360).

Almost surely, 2^78394603704 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 78394603704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102905303040).

78394603704 is an abundant number, since it is smaller than the sum of its proper divisors (127416002376).

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

78394603704 is a wasteful number, since it uses less digits than its factorization.

78394603704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801 (or 3797 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 78394603704 in words is "seventy-eight billion, three hundred ninety-four million, six hundred three thousand, seven hundred four".