78936089460 has 96 divisors (see below), whose sum is σ = 235330220160. Its totient is φ = 19700686848.

The previous prime is 78936089431. The next prime is 78936089461. The reversal of 78936089460 is 6498063987.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 78936089394 and 78936089403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78936089461) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 33589 + ... + 398748.

It is an arithmetic number, because the mean of its divisors is an integer number (2451356460).

Almost surely, 2^78936089460 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 78936089460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117665110080).

78936089460 is an abundant number, since it is smaller than the sum of its proper divisors (156394130700).

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

78936089460 is a wasteful number, since it uses less digits than its factorization.

78936089460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432545 (or 432543 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 78936089460 in words is "seventy-eight billion, nine hundred thirty-six million, eighty-nine thousand, four hundred sixty".