78032997378 has 192 divisors, whose sum is σ = 211492270080. Its totient is φ = 21065184000.

The previous prime is 78032997349. The next prime is 78032997409. The reversal of 78032997378 is 87379923087.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27857578 + ... + 27860378.

It is an arithmetic number, because the mean of its divisors is an integer number (1101522240).

Almost surely, 2^78032997378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78032997378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105746135040).

78032997378 is an abundant number, since it is smaller than the sum of its proper divisors (133459272702).

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

78032997378 is a wasteful number, since it uses less digits than its factorization.

78032997378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275 (or 3263 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 63.

The spelling of 78032997378 in words is "seventy-eight billion, thirty-two million, nine hundred ninety-seven thousand, three hundred seventy-eight".