78489080040 has 192 divisors, whose sum is σ = 274126023360. Its totient is φ = 17926272000.

The previous prime is 78489080023. The next prime is 78489080051. The reversal of 78489080040 is 4008098487.

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 47 ways as a sum of consecutive naturals, for example, 8715540 + ... + 8724540.

It is an arithmetic number, because the mean of its divisors is an integer number (1427739705).

Almost surely, 2^78489080040 is an apocalyptic number.

78489080040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78489080040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137063011680).

78489080040 is an abundant number, since it is smaller than the sum of its proper divisors (195636943320).

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

78489080040 is a wasteful number, since it uses less digits than its factorization.

78489080040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10512 (or 10501 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 78489080040 in words is "seventy-eight billion, four hundred eighty-nine million, eighty thousand, forty".