78000085753440 has 96 divisors (see below), whose sum is σ = 245705746083840. Its totient is φ = 20799559294464.

The previous prime is 78000085753439. The next prime is 78000085753459. The reversal of 78000085753440 is 4435758000087.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20022607 + ... + 23598833.

It is an arithmetic number, because the mean of its divisors is an integer number (2559434855040).

Almost surely, 2^{78000085753440} is an apocalyptic number.

It is an amenable number.

78000085753440 is an abundant number, since it is smaller than the sum of its proper divisors (167705660330400).

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

78000085753440 is a wasteful number, since it uses less digits than its factorization.

78000085753440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621684 (or 3621676 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 51.

The spelling of 78000085753440 in words is "seventy-eight trillion, eighty-five million, seven hundred fifty-three thousand, four hundred forty".