78394603700 has 36 divisors (see below), whose sum is σ = 194418618912. Its totient is φ = 26878149600.

The previous prime is 78394603697. The next prime is 78394603739. The reversal of 78394603700 is 730649387.

It is a happy number.

It is a super-2 number, since 2×78394603700² (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 11 ways as a sum of consecutive naturals, for example, 55995446 + ... + 55996845.

It is an arithmetic number, because the mean of its divisors is an integer number (5400517192).

Almost surely, 2^78394603700 is an apocalyptic number.

78394603700 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78394603700 is an abundant number, since it is smaller than the sum of its proper divisors (116024015212).

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

78394603700 is a wasteful number, since it uses less digits than its factorization.

78394603700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111992312 (or 111992305 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 78394603700 in words is "seventy-eight billion, three hundred ninety-four million, six hundred three thousand, seven hundred".