78630856400 has 30 divisors (see below), whose sum is σ = 188910633462. Its totient is φ = 31452342400.

The previous prime is 78630856363. The next prime is 78630856411. The reversal of 78630856400 is 465803687.

It can be written as a sum of positive squares in 3 ways, for example, as 20757893776 + 57872962624 = 144076^2 + 240568^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98288171 + ... + 98288970.

Almost surely, 2^78630856400 is an apocalyptic number.

It is an amenable number.

78630856400 is an abundant number, since it is smaller than the sum of its proper divisors (110279777062).

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

78630856400 is a wasteful number, since it uses less digits than its factorization.

78630856400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196577159 (or 196577148 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 78630856400 in words is "seventy-eight billion, six hundred thirty million, eight hundred fifty-six thousand, four hundred".