78315074972448 has 48 divisors (see below), whose sum is σ = 211133208888000. Its totient is φ = 25399483773696.

The previous prime is 78315074972443. The next prime is 78315074972467. The reversal of 78315074972448 is 84427947051387.

78315074972448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×78315074972448² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78315074972443) 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, 11024077948 + ... + 11024085051.

It is an arithmetic number, because the mean of its divisors is an integer number (4398608518500).

Almost surely, 2^{78315074972448} is an apocalyptic number.

It is an amenable number.

78315074972448 is an abundant number, since it is smaller than the sum of its proper divisors (132818133915552).

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

78315074972448 is a wasteful number, since it uses less digits than its factorization.

78315074972448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22048163049 (or 22048163041 counting only the distinct ones).

The product of its (nonzero) digits is 379330560, while the sum is 69.

The spelling of 78315074972448 in words is "seventy-eight trillion, three hundred fifteen billion, seventy-four million, nine hundred seventy-two thousand, four hundred forty-eight".