78004285800721 has 8 divisors (see below), whose sum is σ = 89147850592640. Its totient is φ = 66860744856768.

The previous prime is 78004285800719. The next prime is 78004285800739. The reversal of 78004285800721 is 12700858240087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78004285800721 - 2¹ = 78004285800719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78004285800761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704265 + ... + 12606073.

It is an arithmetic number, because the mean of its divisors is an integer number (11143481324080).

Almost surely, 2^{78004285800721} is an apocalyptic number.

It is an amenable number.

78004285800721 is a deficient number, since it is larger than the sum of its proper divisors (11143564791919).

78004285800721 is a wasteful number, since it uses less digits than its factorization.

78004285800721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11923983.

The product of its (nonzero) digits is 2007040, while the sum is 52.

The spelling of 78004285800721 in words is "seventy-eight trillion, four billion, two hundred eighty-five million, eight hundred thousand, seven hundred twenty-one".